@article{DA_2001_8_4_a5,
     author = {E. A. Okolnishnikova},
     title = {On a~method for obtaining lower bounds for the complexity of the realization of {Boolean} functions by nondeterministic branching programs},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {76--102},
     publisher = {mathdoc},
     volume = {8},
     number = {4},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_2001_8_4_a5/}
}