共 21 条
[1]
[Anonymous], 1969, INTRO GEOMETRY
[6]
HADWIGER H, 1976, J REINE ANGEW MATH, V280, P61
[7]
Liu A. C. F., 1979, MATH MAG, V52, P232
[8]
MACDONALD IG, 1963, P CAMB PHILOS SOC, V59, P719
[10]
Pick G., 1899, PRAG NEUE FOLGE, V19, P311