Anagnostopoulos, K. and Petalas, C. (2011). "A fuzzy multicriteria benefit–cost approach for irrigation projects evaluation." Agricultural Water Management 98(9): 1409-1416.
Asher, D. (1962). "A linear programming model for the allocation of R and D efforts." Engineering Management, IRE Transactions on(4): 154-157.
Badri Masood, A., Davis, D. and Davis, D. (2001). "A comprehensive 0–1 goal programming model for project selection." International Journal of Project Management 19(4): 243-252.
Blanning, R. W. (1981). "Model-based and data-based planning systems." Omega 9(2): 163-168.
Brewer, P. C. (1993). "Managing uncertainty." Strategic Finance 75(4): 39-45.
Fox, G. E. and N. R. Baker (1985). "Project selection decision making linked to a dynamic environment." Management science 31(10): 1272-1285.
Esfahani HN, hossein Sobhiyah M, Yousefi VR. Project Portfolio Selection via Harmony Search Algorithm and Modern Portfolio Theory. Procedia-Social and Behavioral Sciences. 2016;226:51-8.
Fliedner T, Liesiö J. Adjustable robustness for multi-attribute project portfolio selection. European Journal of Operational Research. 2016;252(3):931-46.
Ghapanchi, A.H., Tavana, M., Khakbaz, M.H. and Low, G. (2012). "A methodology for selecting portfolios of projects with interactions and under uncertainty." International Journal of Project Management 30(7): 791-803.
Ghorbal-Blal, I. (2011). "The role of middle management in the execution of expansion strategies: The case of developers’ selection of hotel projects." International Journal of Hospitality Management 30(2): 272-282.
Grossman, G. M. and C. Shapiro (1987). "Dynamic r & d competition." The Economic Journal: 372-387.
Han, S., Diekmann, J., Lee, Y., and Ock, J. (2004). "Multicriteria Financial Portfolio Risk Management for International Projects." Journal of Construction Engineering and Management 130(3): 346-356.
Hassanzadeh, F., Modarres, M., Nemati, H.R. andAmoako-Gyampah, K. (2014). "A robust R&D project portfolio optimization model for pharmaceutical contract research organizations." International Journal of Production Economics 158: 18-27.
Iamratanakul, S.,Patanakul,P., Milosevic,D. (2008). "Project portfolio selection: From past to present." Proceedings of the 2008 IEEE ICMIT: 287-292.
Khorramshahgol, R., Azani,H., Gousti,Y.(1988). "An integrated approach to project evaluation and selection." Engineering Management, IEEE Transactions on 35(4): 265-270.
Liberatore, M. J. (1987). "An extension of the analytic hierarchy process for industrial R&D project selection and resource allocation." Engineering Management, IEEE Transactions on(1): 12-18.
Liberatore, M. J. and Stylianou,A. C. (1993). "The Development Manager's Advisory System: A Knowledge‐Based DSS Tool for Project Assessment." Decision Sciences 24(5): 953-976.
Liesiö, J. and A. Salo (2012). "Scenario-based portfolio selection of investment projects with incomplete probability and utility information." European Journal of Operational Research 217(1): 162-172.
Liu, S.-S. and C.-J. Wang (2011). "Optimizing project selection and scheduling problems with time-dependent resource constraints." Automation in Construction 20(8): 1110-1119.
Luehrman, T. A. (1998). "Investment opportunities as real options: getting started on the numbers." Harvard business review 76: 51-66.
Martino, J. P. (1995). Research and development project selection, Wiley Series in Engineering & Technology Management.
Mavrotas, G. and D. Diakoulaki (2005). "Multi-criteria branch and bound: A vector maximization algorithm for Mixed 0-1 Multiple Objective Linear Programming." Applied Mathematics and Computation 171(1): 53-71.
Mavrotas, G. (2009). "Effective implementation of the ε-constraint method in multi-objective mathematical programming problems." Applied Mathematics and Computation 213(2): 455-465.
Mavrotas, G., Diakoulaki, D. and Kourentzis, A. (2008). "Selection among ranked projects under segmentation, policy and logical constraints." European Journal of Operational Research 187(1): 177-192.
Medaglia, A.L., Graves, S.B. and Ringuest, J.L. (2007). "A multiobjective evolutionary approach for linearly constrained project selection under uncertainty." European Journal of Operational Research 179(3): 869-894.
Mousavi, S. M., Hajipour, V., Niaki, S.T.A. and Alikar,N. (2013). "Optimizing multi-item multi-period inventory control system with discounted cash flow and inflation: two calibrated meta-heuristic algorithms." Applied Mathematical Modelling 37(4): 2241-2256.
Namazian A, Yakhchali SH. Modeling and Solving Project Portfolio and Contractor Selection Problem Based on Project Scheduling under Uncertainty. Procedia-Social and Behavioral Sciences. 2016;226:35-42.
Okoli, C. and S. D. Pawlowski (2004). "The Delphi method as a research tool: an example, design considerations and applications." Information & management 42(1): 15-29.
Paolini, A. (1977). "Project selection methods that pick winners." Research Management 20: 26-29.
Rabbani, M.,Aramoon Bajestani, M. andBaharian Khoshkhou,G. (2010). "A multi-objective particle swarm optimization for project selection problem." Expert Systems with Applications 37(1): 315-321.
Sackman, H. (1974). Delphi assessment: Expert opinion, forecasting, and group process, DTIC Document.
Schaeffer S, Cruz-Reyes L. Static R&D project portfolio selection in public organizations. Decision Support Systems. 2016;84:53-63.
Sefair JA, Méndez CY, Babat O, Medaglia AL, Zuluaga LF. Linear solution schemes for Mean-SemiVariance Project portfolio selection problems: An application in the oil and gas industry. Omega. 2017;68:39-48.
Shakhsi-Niaei,M., Shiripour, M., Shakouri, H. and Iranmanesh, S.H. (2014). "Application of genetic and differential evolution algorithms on selecting portfolios of projects with consideration of interactions and budgetary segmentation." International Journal of Operational Research 22(1): 106-128.
Shakhsi-Niaei, M., Torabi, S.A. and Iranmanesh, S.H. (2011). "A comprehensive framework for project selection problem under uncertainty and real-world constraints." Computers & Industrial Engineering 61(1): 226-237.
Skulmoski, G.J., Hartman, F.T. and Krahn, J. (2007). "The Delphi method for graduate research." Journal of Information Technology Education: Research 6(1): 1-21.
Souder, W. E. and T. Mandakovic (1986). "R&D project selection models." Research Management 29(4): 36-42.
Tavana M, Keramatpour M, Santos-Arteaga FJ, Ghorbaniane E. A fuzzy hybrid project portfolio selection method using data envelopment analysis, TOPSIS and integer programming. Expert Systems with Applications. 2015;42(22):8432-44.
Vira, C. and Y. Y. Haimes (1983). Multiobjective decision making: theory and methodology, North-Holland.
Weber, R., Werners, B. and Zimmermann, H.J. (1990). "Planning models for research and development." European Journal of Operational Research 48(2): 175-188.
Winkofsky, E.P., Baker, N.R. and Sweeney, D.J. (1981). "A decision process model of R&D resource allocation in hierarchical organizations." Management science 27(3): 268-283.
Yu, L., Wang, S., Wen, F. and Lai, K.K. (2012). "Genetic algorithm-based multi-criteria project portfolio selection." Annals of Operations Research 197(1): 71-86.