共 21 条
[5]
GUPTA CP, 1998, CANAD APPL MATH Q, V6, P45
[7]
HENDERSON J, 2004, ELECT J DIFFERENTIAL, V115, P5
[9]
KARAKOSTAS GL, 2002, ELECT J DIFFERENTIAL, V19, P109
[10]
Krasnoselskii M. A., 1984, GEOMETRICAL METHODS