Sahay, R. R. and Bhatia, G.: Characterizations for the set of higher order global strict minimizers, Accepted for publication in Journal of Nonlinear and Convex Analysis (Japan), vol. 15(6), 1293-1301, 2014, ISSN: 1345-4773.
Bhatia, G. and Sahay, R. R.: Strict global minimizers and higher-order generalized strong invexity in multiobjective optimization, Journal of Inequalities and Application (Springer), Doi: 10.1186/1029-242X-2013-31, 2013, ISSN: 1029-242X (electronic version).
Sahay, R. R. and Bhatia, G.: Optimality and second order duality for a class of quasi-differentiable multiobjective optimization problem, Yugoslav Journal of Operations Research, 23 (2), 221-235, 2013, ISSN: 0354-0243.
Sahay, R. R.: Optimality and duality via strong (Ф,F)-invexity of higher order, Advances in Theoretical and Applied Mathematics, 6(3), 413-422, 2011, ISSN: 0973-4554.
Sahay, R. R., Jha, P. C. and Bhatia, D.: Duality with strong pseudo – univexity for a class of non – differentiable programming problem, In: VISION 2020: The Strategic Role of Operational Research, Ravichandran, N. (ed.), 481-494, 2005, Allied Publishers Pvt. Ltd., New Delhi (proceeding of 37th Annual Convention of Operational Research Society of India, 8 – 11 Jan. 2005, IIM Ahmedabad), ISBN: 81-8424-108-9.
Jain, V., Sahay, R.R. & Nupur Multi-verse metaheuristic and deep learning approach for portfolio selection with higher moments. Int Journal of System Assurance Engineering & Management (2023). https://doi.org/10.1007/s13198-023-02218-2, Scopus & ESCI
Sahay, R. R., & Bhatia, G. (2024). Higher order strict global minimizers in non-differentiable multiobjective optimization involving higher order invexity and variational inequality. OPSEARCH, 61(1), 226-244, Scopus & ESCI
Lal, M., Ramesh Kumar & Sahay, R.R. (2023). Unleashing India's Potential”: A Comprehensive Analysis of New Education Policy's Entrepreneurial Vision in Education Reform. Social Action (A Quarterly Journal Of Social Science), 73 (3), 233-251, UGC(CARE)
Sahay, R. R. and Bhatia, G.: Characterizations for the set of higher order global strict minimizers, Journal of Nonlinear and Convex Analysis, vol. 15(6), 1293-1301, 2014, ISSN: 1345-4773. Scpus & SCI-E
Bhatia, G. and Sahay, R. R.: Strict global minimizers and higher-order generalized strong invexity in multiobjective optimization, Journal of Inequalities and Application, Doi: 10.1186/1029-242X-2013-31, 2013, ISSN: 1029-242X (electronic version). Scopus & SCI-E
Sahay, R. R. and Bhatia, G.: Optimality and second order duality for a class of quasi-differentiable multiobjective optimization problem, Yugoslav Journal of Operations Research, 23 (2), 221-235, 2013, ISSN: 0354-0243. Scopus
Sahay, R. R.: Optimality and duality via strong (Ф,F)-invexity of higher order, Advances in Theoretical and Applied Mathematics, 6(3), 413-422, 2011, ISSN: 0973-4554.
Sahay, R. R., Jha, P. C. and Bhatia, D.: Duality with strong pseudo – univexity for a class of non – differentiable programming problem, In: VISION 2020: The Strategic Role of Operational Research, Ravichandran, N. (ed.), 481-494, 2005, Allied Publishers Pvt. Ltd., New Delhi (proceeding of 37th Annual Convention of Operational Research Society of India, 8 – 11 Jan. 2005, IIM Ahmedabad), ISBN: 81-8424-108-9.