共 6 条
[1]
Bol G., 1950, PROJEKTIVE DIFFERENT
[2]
Bol G., 1949, ABH MATH SEM HAMBURG, V16, P1
[3]
Bompiani E, 1914, REND CIRC MAT PALERM, V37, P305, DOI [10.1007/BF03014826, DOI 10.1007/BF03014826]
[5]
Lane E.P., 1942, TREATISE PROJECTIVE
[6]
VOSS A, 1876, MATH ANN, V9, P55