@article{VTAMU_2018_23_124_a25,
     author = {R. A. Khachatryan},
     title = {On some properties of quasi convex functions and sets},
     journal = {Vestnik rossijskih universitetov. Matematika},
     pages = {824--837},
     publisher = {mathdoc},
     volume = {23},
     number = {124},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTAMU_2018_23_124_a25/}
}