Azar A. 2007. ``Operation research", Payame Noor University Press, Tehran.
Bai Y., Wang P., and Xie J. 2014. ``Optimization of urban water supply schemes based on grey system theory", International Journal of Control and Automation, 7 (9), 239-246.
Baidya A., Bera U.K. and Maiti M. 2016. ``The grey linear programming approach and its application to multi-objective multi-stage solid transportation problem", Research, 53 (3), 500–522.
Bevilacqua M., Ciarapica F. E. and Giacchetta G. 2006. ``A fuzzy-QFD approach to supplier selection". Journal of Purchasing and Supply Management, 12, 14-27.
Bhattacharyya R. 2015. ``A grey theory-based multiple attribute approach for R& D project portfolio selection", Fuzzy Information and Engineering, 7, 211-225.
Cheng F.J., Hui, S.H., and Chen, Y.C. 2002. ``Reservoir operation using grey fuzzy stochastic dynamic programming", Hydrological Processes, 16, 2395-2408.
Darvishi D. 2019. ``Some duality results in grey linear programming problem", Journal of Operational Research and Its Applications, 16(3), 55-68.
Darvishi D., Forrest J., and Liu, S. 2019. ``A comparative analysis of grey ranking approaches", Grey Systems: Theory and Application, 9(4), 472-487.
Darvishi D., Liu S., and Nasseri S.H. 2018. ``A new approach in animal diet using grey system theory", Grey Systems: Theory and Application, 8(2), 167-180.
Deng J.L. 1989. ``Introduction to grey system theory", The Journal of Grey Systems, 1(1), 1-24.
Honghua W., and Yong M. 2013. ``Emerging technologies for information systems", Computing and Management Lecture Notes in Electrical Engineering, 236, 97-106.
Kumar M. 2014. ``Applying weakest t-norm based approximate intuitionistic fuzzy arithmetic operations on different types of intuitionistic fuzzy numbers to evaluate the reliability of PCBA fault", Applied Soft Computing, 23, 387–406.
Li Q.X., and Lin Y. 2014. ``A briefing to grey systems theory", Journal of Systems Science and Information, 2(2), 178-192.
Li Q.X., Liu S.F., and Wang N.A. 2014. ``Covered solution for a grey linear program based on a general formula for the inverse of a grey matrix", Grey Systems: Theory and Application, 4(1), 72-94.
Liu S.F., Dang Y., and Forrest J. 2009. ``On positioned solution of linear programming with grey parameters", International Conference on Systems, Man and Cybernetics, USA, 751-756.
Liu S.F., and Lin Y. 2006. ``Grey Information, theory and Practical Applications", Springer.
Liu S.F., and Xie N. 2013. ``Grey systems theory and its applications". The Science Press of China, Beijing.
Luhandjula M.K., and Rangoaga M.J. 2014. ``An approach for solving a fuzzy multiobjective programming problem", European Journal of Operational Research, 232, 249–255.
Mahmoudi A., Feylizadeh M.R., and Darvishi D. 2018. ``A note on “a multi-objective programming approach to solve grey linear programming”, Grey Systems: Theory and Application, 8(1), 35-45.
Michael C.F., Olvi L.M., and Stephen J.W. 2007. ``Linear programming with MATLAB", MOS-SIAM Series on Optimization.
Moore R.E., Kearfott R.B., and Cloud M.J. 2009. ``Introduction to interval analysis", Society for Industrial and Applied Mathematics Press, Philadelphia.
Mujumdar P., and Karmakar S. 2008. ``Grey fuzzy multi-objective optimization" In Fuzzy Multi-Criteria Decision Making, Springer.
Nasseri S.H. and Darvishi D. 2018. ``Duality results on grey linear programming problems", Journal of Grey Systems, 30(3), 127-142.
Nasseri S.H., Yazdani A., and Darvishi D. 2016. ``A primal simplex algorithm for solving linear programming problem with grey cost coefficients", Journal of New Researches in Mathematics, 1(4), 115-135.
Ramesh G., and Ganesan K. 2012. ``Duality theory interval linear programming ", International Organization of Scientific Research Journal of Mathematics, 4(4), 39-47.
Ramik J. 2006. ``Duality in fuzzy linear programming with possibility and necessity relations", Fuzzy Sets and Systems, 157, 1283–1302.
Razavi Hajiagha S.H., Akrami H. and Hashemi S.S. 2012. ``A multi-objective programming approach to solve grey linear programming", Grey Systems: Theory and Application, 2 (2), 259-271.
Rodder W., and Zimmermann H.J. 1980. ``Duality in fuzzy linear programming", International Symposium on External Methods and Systems Analysis, University of Texas at Austin, 415– 427.
Rohn J. 1980. ``Duality in interval linear programming", International Symposium on Interval Mathematics, Academic Press, New York, 521–529.
Soyster A.L. 1979. ``Inexact linear programming with generalized resource sets", European Journal Operations Research, 3, 316– 321.
Singh V., Yadav S.P., and Singh S.K. 2019. ``Duality theory in Atanassov’s intuitionistic fuzzy mathematical programming problems: Optimistic, pessimistic and mixed approaches", Annals of Operations Research, 275 (2).
Thuente D.J. 1980. ``Duality theory for generalized linear programs with computational methods", Operations Research. 28(4), 1005–1011.
Voskoglou M.G. 2018. ``Solving linear programming problems with grey data", Oriental Journal of Physical Sciences, 3 (1), 17-23.
Wei J., Zhou L., Wang F., and Wu D. 2015. ``Work safety evaluation in Mainland China using grey theory", Applied Mathematical Modelling, 39, 924–933.
Xia D.C., Li B.T., Wang J.P., and Shi G.P. 2014. ``Research on general data envelopment analysis model based on the grey linear programming", Applied Mechanics and Materials, 577, 828-831.
Xiao X.P. 1998. ``New study on the solution of grey linear programming", The Journal of Grey System, 10 (2), 133-140.
Yang Y. and Liu S.F. 2011. ``Reliability of operations of grey numbers using kernels", Grey Systems: Theory and Application, 1(1), 57–71.
Yan X., and Song Z. 2014. ``The portfolio models of contained grey profit under uncertainty", Grey Systems: Theory and Application, 4(3), 487-494.