共 12 条
[4]
Browne E., 1930, B AM MATH SOC, V36, P705
[5]
BROWNE ET, 1939, AM MATH MONTHLY, V46, P252
[8]
PARKER WV, 1943, DUKE MATH J, V10, P479
[9]
PARKER WV, 1937, DUKE MATH J, V3, P484, DOI DOI 10.1215/S0012-7094-37-00338-7