@article{DE_1967_3_2_a2,
     author = {N. F. Otrokov},
     title = {On the structure of the coefficients of the succession function},
     journal = {Differencialʹnye uravneni\^a},
     pages = {193--205},
     publisher = {mathdoc},
     volume = {3},
     number = {2},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1967_3_2_a2/}
}