KASHURI, A. and LIKO, R. 2018. Ostrowski type fractional integral operators for generalized (r; g, s, m, ϕ)-preinvex functions. Studia Universitatis Babeș-Bolyai Mathematica. 63, 2 (Jun. 2018), 155–173. DOI:https://doi.org/10.24193/subbmath.2018.2.01.