[
Ben-Israel, A. and Mond, B. 1986. What is invexity? J. Austral. Math. Soc. Ser. B 28, 1, 1–9.
]Search in Google Scholar
[
Dragomir, S. S. 2001. On the Hadamard’s inequality for convex functions on the co-ordinates in a rectangle from the plane. Taiwanese J. Math. 5, 4, 775–788.
]Search in Google Scholar
[
Hanson, M. A. 1981. On sufficiency of the Kuhn-Tucker conditions. J. Math. Anal. Appl. 80, 2, 545–550.
]Search in Google Scholar
[
Kilbas, A. A., Srivastava, H. M., and Trujillo, J. J. 2006. Theory and applications of fractional differential equations. North-Holland Mathematics Studies, vol. 204. Elsevier Science B.V., Amsterdam.
]Search in Google Scholar
[
Latif, M. A. and Dragomir, S. S. 2013. Some Hermite-Hadamard type inequalities for functions whose partial derivatives in absolute value are preinvex on the co-ordinates. Facta Univ. Ser. Math. Inform. 28, 3, 257–270.
]Search in Google Scholar
[
Matł Oka, M. 2013. On some Hadamard-type inequalities for (h1, h2)-preinvex functions on the co-ordinates. J. Inequal. Appl., 2013:227, 12.
]Search in Google Scholar
[
Meftah, B. 2019. Fractional hermite-hadamard type integral inequalities for functions whose modulus of derivatives are co-ordinated log-preinvex. Punjab Univ. J. Math. (Lahore) 51, 2.
]Search in Google Scholar
[
Noor, M. A. 1994. Variational-like inequalities. Optimization 30, 4, 323–330.
]Search in Google Scholar
[
Noor, M. A. 2005. Invex equilibrium problems. J. Math. Anal. Appl. 302, 2, 463–475.
]Search in Google Scholar
[
Özdemir, M. E., Akdemir, A. O., and Yi Ldiz, C. 2012. On co-ordinated quasi-convex functions. Czechoslovak Math. J. 62(137), 4, 889–900.
]Search in Google Scholar
[
Özdemir, M. E., Yi Ldiz, C., and Akdemir, A. O. 2012. On some new Hadamard-type inequalities for co-ordinated quasi-convex functions. Hacet. J. Math. Stat. 41, 5, 697–707.
]Search in Google Scholar
[
Pečarić, J. E., Proschan, F., and Tong, Y. L. 1992. Convex functions, partial orderings, and statistical applications. Mathematics in Science and Engineering, vol. 187. Academic Press, Inc., Boston, MA.
]Search in Google Scholar
[
Pini, R. 1991. Invexity and generalized convexity. Optimization 22, 4, 513–525.
]Search in Google Scholar
[
Sari Kaya, M. Z. 2014. On the Hermite-Hadamard-type inequalities for co-ordinated convex function via fractional integrals. Integral Transforms Spec. Funct. 25, 2, 134–147.
]Search in Google Scholar
[
Weir, T. and Mond, B. 1988. Pre-invex functions in multiple objective optimization. J. Math. Anal. Appl. 136, 1, 29–38.
]Search in Google Scholar
[
Yang, X. M. and Li, D. 2001. On properties of preinvex functions. J. Math. Anal. Appl. 256, 1, 229–241.
]Search in Google Scholar