@article{DAN_1971_197_6_a6,
     author = {S. S. Kutateladze and A. M. Rubinov},
     title = {Some classes of $H$-convex functions and sets},
     journal = {Doklady Akademii Nauk},
     pages = {1261--1263},
     publisher = {mathdoc},
     volume = {197},
     number = {6},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_197_6_a6/}
}