共 12 条
[3]
FIEDLER F, 1979, WISS Z PADAGOG HOCHS, V15, P162
[4]
FIEDLER F, 1981, BEITRAGE ANAL, V18, P113
[5]
Glazman I. M., 1963, DIRECT METHODS QUALI
[9]
MULLERPFEIFFER E, 1981, SPECTRAL PROPERTIES
[10]
Nehari Z., 1957, T AM MATH SOC, V85, P428