共 7 条
[1]
ABBOTT HL, UNPUBLISHED
[2]
Danzer L., 1963, P S PURE MATH, V7, P100
[3]
Grunbaum B., 1961, P AM MATH SOC, V12, P607
[4]
HADWIGER H, 1964, COMBINATORIAL GEOMET, P7
[5]
Helly E., 1923, JBER DEUT MATH VEREI, V32, P175
[6]
KATCHALSKI M, UNPUBLISHED