共 5 条
[1]
BIRKHOFF G, 1962, ORDINARY DIFFERENTIA, pCH11
[2]
Ince E. L., 1944, ORDINARY DIFFERENTIA, pviii+558
[3]
KATO T, 1967, GRUNDLEHREN MATH WIS, V132
[4]
Schwartz J., 1954, PAC J MATH, V4, P415, DOI [10.2140/pjm.1954.4.415, DOI 10.2140/PJM.1954.4.415]
[5]
Titchmarsh E.C., 1946, EIGENFUNCTION EXPANS