@article{DA_1996_3_3_a1,
     author = {\'E. Sh. Kospanov},
     title = {On a~relation between the computation time of a~direct mapping and an inverse mapping},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {40--46},
     publisher = {mathdoc},
     volume = {3},
     number = {3},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_1996_3_3_a1/}
}