共 5 条
[1]
Helly E., 1923, JBER DEUT MATH VEREI, V32, P175
[3]
Kakutani S., 1937, P IMP ACAD TOKYO, V13, P93
[4]
KLEE VL, 1949, THESIS U VIRGINIA
[5]
Whyburn G.T., 1942, AM MATH SOC C PUBLIC, V28