共 10 条
[1]
DETRE L, 1943, MITT STERNW BUDAPEST, V17
[2]
GORDON C, 1947, AP J, V106, P318
[3]
MORGAN WW, 1953, AP J, V117, P313
[5]
SANFORD R, 1935, AP J, V81, P150
[6]
SANFORD R, 1949, AP J, V109, P211
[8]
STEBBINS J, 1953, PUBL ASTRON SOC PAC, V65, P118
[10]
WALRAVEN T, 1949, B ASTRON I NETH, V11, P17