Abel, A.B. (1983). Optimal Investment under Uncertainty. The American Economic Review, 73(1), 228-233.
Akdoğu, E., & MacKay, P. (2012). Product markets and corporate investment: Theory and evidence. Journal of Banking & Finance, 36 (2), 439-453.
Alama, A., Uddinb, M., & Yazdifara, H. (2019). Institutional Determinants of R&D Investment: Evidence from Emerging Market., Technological Forecasting & Social, 138(C), 34-44.
Arif Khan, M., Qin, X., Jebran, K., & Ullah, I. (2020). Uncertainty and R&D investment: Does product market competition matter?.
Research in International Business and Finance,
52 (April), 101167.
Arif Khan, M., Qin, X., & Jebran, K. (2019). Does uncertainty influence the leverage-investment association in Chinese firms?. Research in International Business and Finance, 50 (C), 134- 152.
Badavar Nahandi, Y., & Jalil Zadeh, H. (2022). The relationship between firm-specific uncertainty and investment decisions with emphasis on the role of product market power. Journal of Management and Accounting in the Third Millennium, 6(2), 19-33 [In Persian].
Bromiley, P., Rau, D., & Zhang, Y. (2017). Is R&D risky?. Strategic Management Journal, 38(4), 876-891.
Cheng, J.T., Jiang, I.M., & Liu, Y.H. (2015). Technological innovation, product life cycle and market power: A real options approach. International Journal of Information Technology & Decision Making, 14(01), 93-113.
Cho, S., & Lee, J. (2021). Estimating the uncertainty–R&D investment relationship and its interactions with firm size. Small Business Economics, 57, 1243-1267.
Coad, A., & Rao, R. (2010). Firmgrowth and R&D Expenditure. Economics of Innovation and New Technology, 19(2), 127-145.
Czarnitzki, D., & Toole, A.A. (2011). Patent Protection, Market Uncertainty, and R&D Investment. The Review of Economics and Statistics, 93 (1): 147-159.
Czarnitzki, D., & Toole, A.A. (2013). The R&D investment–uncertainty relationship: do strategic rivalry and firm size matter?. Managerial & Decision Economics, 34(1),15-28.
Dalziel, T., Gentry, R.J., & Bowerman, M. (2011). An Integrated Agency-Resource Dependence View of the Influence of Directors' Human and Relational Capital on Firms' R&D Spending. Journal of Management Studies, 48(6), 1217-1242.
de la Horra, L.P., Perote, J., de la Fuente, G. (2022). The impact of economic policy uncertainty and monetary policy on R&D investment: An option pricing approach. Economics Letters, 214, 110413.
Dibiasi, A., Abberger, K., Siegenthaler, M., & Sturm, J.E. (2018). The effects of policy uncertainty on investment: Evidence from the unexpected acceptance of a far-reaching referendum in Switzerland. European Economic Review, 104 (C), 38-67.
Dixit, A.K., & Pindyck, R.S. (1994). Investment under uncertainty. Princeton University Press, 1-40.
Driver, C., & Guedes, M.J.C. (2012). Research and development, cash flow, agency and governance: UK large companies. Research Policy, 41(9), 1565-1577.
Drobetz, W., El Ghoul, S., Guedhami, O., & Janzen, M. (2018). Policy uncertainty, investment and the cost of capital. Journal of Financial Stability, 39 (Dec): 28-45.
Fang, V.W., Tian, X., & Tice, S. (2014). Does stock liquidity enhance or impede firm innovation?. The Journal of Finance, 69 (5), 2085-2125.
Fishman, A., & Rob, R. (1999). The Size of Firms and R&D Investment. International Economic Review, 40(4), 915-931.
Ghazinoory, S., Amiri, M., Ghazinoori, S., & Alizadeh, P. (2017). Factors Influencing the Amount of Business Expenditure on R&D in Iran; three different industries. Journal of Technology Development Management, 5(1), 9-38 [In Persian].
Gu, L. (2016). Product market competition, R&D investment and stock returns. Journal of Financial Economics, 119(2), 441-455.
Gulen, H., & Ion, M. (2016). Policy uncertainty and corporate investment. The Review of Financial Studies, 29(3), 523–564.
Haji Mohammadalijahromi, M., & VirdiCalhory, S. A. (2018). Identifying the Effective Factors of Corporate Investment in the R&D. Journal of Development & Evolution Mnagement, 9, 227-235 [In Persian].
Hartman, R. (1972). The Effects of Price and Cost Uncertainty on Investment. Journal of Economic Theory, 5, 258-266.
Honoré, F., Munari, F., & de La Potterie, B.V. (2015). Corporate governance practices and companies' R&D intensity: evidence from European countries. Research Policy, 44, 533-543.
Ivus, O., & Wajda, J. (2018). Fluctuations in Uncertainty and R&D Investment. Centre for International Governance Innovation, CIGI Papers No. 175
Jiang, F., Kim, K.A., Nofsinger, J.R., & Zhu, B. (2015). Product market competition and corporate investment: Evidence from China. Journal of Corporate Finance, 35, 196-210.
Julio, B., & Yook, Y. (2012). Political uncertainty and corporate investment cycles. Journal of Finance, 67(1), 45-83.
Jung, S., & Kwak, G. (2018). Firm Characteristics, Uncertainty and R&D Investment: The Role of Size and Innovation Capacity. Sustainability, 10(5), 1-14.
Kamyabi, Y., & Saberi, F. (2017). The Investigation of Mediating Effect of Research and Development Disclosure on the Relationship between Product Market Competition and Stock Returns. Accounting and Auditing Research, 9(33), 108-127 [In Persian].
Kang, T., Baek, C., Lee, J.D. (2017). The persistency and volatility of the firm R&D investment: Revisited from the perspective of technological capability. Research Policy, 46(9), 1570-1579.
Kim, H., & Park, S.Y. (2012). The Relation between Cash Holdings and R&D Expenditures According to Ownership Structure. Eurasian Business Review, 2(2), 25-42.
Kordestani, G., Aldebs, A., & Saber, A. (2018). High Growth Sale, Leading in Industry and the Impacts of Product Market Competition on the Corporate Investment. Financial Management Perspective, 8(22), 29-49 [In Persian].
Kulatilaka, N., & Perotti, E.C. (1998). Strategic Growth Options. Management Science, 44(8), 1021-1031.
Lai, Y.L., Lin, F.J., & Lin, Y.H. (2015). Factors affecting firm's R&D investment decisions. Journal of Business Research, 68(4), 840-844.
Lin, Y., Dong, D., & Wang, J. (2021). The Negative Impact of Uncertainty on R&D Investment: International Evidence. Sustainability, 13, 2746.
Loni, S., Abbasian, E., & Haji, G. (2021). The Effect of Economic Policy Uncertainty on Corporate Investment: Evidence from Companies Listed in the Tehran Stock Exchange. Financial Research Journal, 23(2), 249-268 [In Persian].
Lv, D.D., Chen, W., Zhu, H., & Lan, H.(2019). How does inconsistent negative performance feedback affect the R&D investments of firms? A study of publicly listed firms. Journal of Business Research, 102: 151-162.
Mai, C-C., & Lin, S-C. (2021). The effects of uncertainties over R&D policy or market demand on R&D levels. Management & Decision Economics, 42 (4), 1048-1056.
Maranjory, M. (2024). Environmental Uncertainty and R&D Investment: Moderator role of Product Market Competition. International Journal of Finance & Managerial Accounting, 9(33), 129-138.
Mun, j. (2002). Real Option Analysis: Tools and Techniques for Valuing Strategic Investment and Decision. John Wiely and Sons, 2nd Edition.
Nahani, A., Entezar, E., Paytakhti Oskooe, S.A., & Sokhanvar, M. (2023). Investigating the nonlinear effects of financial development on research and development in selected developing countries.
Journal of Development and Capital.
Articles in Press, Accepted Manuscript, Available Online [In Persian].
Noraniazad, S., & Khodadad Kashi, F. (2020). Evaluating Market Structure-R&D Expenditure Relationship in Iran’s Manufacturing Sector. Quarterly Journal of Applied Theories of Economics, 6(4), 27-52 [In Persian].
Olalere, O.E., & Mukuddem-Petersen, J. (2023). The effect of firm-level uncertainty on R&D investment and corporate risk-taking of firms in BRICS countries: a simultaneous approach. Applied Economics, 55 (43), 5033-5047.
Olalere, O.E., & Mukuddem-Petersen, J. (2023). Product Market Competition, Corporate Investment and Firm Value: Scrutinizing the Role of Economic Policy Uncertainty. Economies, 11(6), 167.
Park, Y., Jaeun, S., & Kim, T. (2010). Firm Size, Age, Industrial Networking, and Growth: A Case of the Korean Manufacturing Industry. Small Business Economics, 35, 153-168.
Peters, B., Robert, M., Vuong, V., & Fryges, H. (2013). Firm R&D, Innovation, and Productivity in German Industry. Center for European Economic Research, 1-34.
Pindyck, R.S. (1991). Irreversibility, uncertainty, and investment. Journal of Economic Literature, 29(3), 1110-1148.
Rezaei, G., Taghizadeh, R., Sadeghzadeh Maharlui, M., & Zeraatgari, R. (2022). The Effects of Product Market Competition on Labor Investment Efficiency with Emphasis the Role of Financing Constraints. Financial Management Strategy, 10(2), 77-98 [In Persian].
Ross, J.M., Fisch, J.H., & Varga, E. (2018). Unlocking the value of real options: How firm‐specific learning conditions affect R&D investments under uncertainty. Strategic Entrepreneurship Journal,12(3),335-353.
Song, Z., & Ren, S. (2020). Product Market Competition and R&D Investment: Evidence From Textual Analysis on Annual Report of China’s Listed Firms. Asian Economics Letters, 1(4), 1-5.
Stam, E. (2009). The Roles of R&D in New Firm Growth. Small Business Economy, 33: 77-89.
Stein, L.C., & Stone, E. (2013). The effect of uncertainty on investment, hiring and R&D: Causal evidence from equity options. Available at https://ssrn.com
Stoughton, N.M., Wong, K.P., & Yi, L. (2017). Investment efficiency and product market competition. Journal of Financial and Quantitative Analysis, 52(6), 2611-2642.
Sun, X., Yuan, F., & Wang, Y. (2021). Market power and R&D investment: the case of China. Industrial and Corporate Change, 30 (6), 1499-1515.
Teixeira, A.A.C. & Fortuna, N. (2010). Human capital, R&D, trade, and long-run productivity: Testing the technological absorptionhypothesis for the Portuguese economy. Research Policy, 39, 335-350.
Tsuboi, M. (2020). Growth, R&D and uncertainty. Economic Modelling, 87 (C): 394-400.
Vagfi, S. H., & Rajabi, A. (2021). The Effect of Management Abilities on Research and Development Expenses of Corporates with an Emphasis the Role of Market Competitive Threats. Studies of Ethics and Behavior in Accounting and Auditing, 1(2), 111-132 [In Persian].
Van Vo, L., & Le, H.T.T. (2017). Strategic growth option, uncertainty and R&D investment. International Review of Financial Analysis, 51, 16-24.
Wang, Y., Chen, C.R., & Huang, Y.S. (2014). Economic policy uncertainty and corporate investment: Evidence from China. Pacific-Basin Finance Journal, 26 (1), 227-243.
Wang, Y., Wei, Y., & Song, F.M. (2017). Uncertainty and corporate R&D investment: Evidence from Chinese listed firms. International Review of Economics & Finance, 47 (1), 176-200.
Wang, B., Khalid, S., & Mahmood, H. (2023). R&D Spending and Economic Policy Uncertainty in Asian Countries: an Advanced Panel Data Estimation Study. Journal of the Knowledge Economy,
Weerawardena, J., O'Cass, A., & Julian, C. (2006). Does Industry Matter? Examining the Role of Industry Structure & Organizational Learning in Innovation and Brand Performance. Journal of Business Research, 59 (1), 37-45.
Xiao, G. (2013). Legal shareholder protection and corporate R&D investment. Journal of Corporate Finance, 23 (C): 240-266.
Yang, J., Wang, L., Sun, Z., Zhu, F., Guo, Y., & Shen, Y. (2021). Impact of Monetary Policy Uncertainty on R&D Investment Smoothing Behavior of Pharmaceutical Manufacturing Enterprises: Empirical Research Based on a Threshold Regression Model. International Journal of Environmental Research and Public Health, 18 (21):11560.