共 6 条
[1]
ANDREEV AA, 1986, URAUNENIYA NEKLASSIC, P10
[2]
GUL IM, 1955, USP MAT NAUK, V10, P153
[3]
MOISEEV EI, 1992, DIFF URAVN, V28, P1128
[4]
NAKHUSHEV AM, 1970, DIFFERENTS URAUN, V6, P44
[5]
NERSESYAN AB, 1968, MAT 2 VSES K TEOR PR, P116
[6]
Zhegalov V.I., 1962, Uchenye zapiski Kazanskogo gosudarstvennogo universiteta imeni V.I. Lenina, V122, P3