@article{ZVMMF_1983_23_3_a5,
     author = {O. F. Borisenko and L. I. Minchenko},
     title = {Directional differentiability of the maximum function},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {567--575},
     publisher = {mathdoc},
     volume = {23},
     number = {3},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1983_23_3_a5/}
}