共 11 条
[1]
BUZDIN AA, 1971, P STEKLOV I MATH, V115, P77
[3]
Kantorovich L.V., 1964, APPROXIMATE METHODS
[6]
KRUEGER RP, UNPUBLISHED
[7]
ROSEAU M, 1976, ASYMPTOTIC WAVE THEO
[8]
WESTON V, 1974, J MATH PHYS, V15, P290