共 6 条
[1]
1911, ANN OBSERVATOIRE AST, V5, P104
[2]
1913, VIERTELJAHRSSCHRIFT, V48, P365
[3]
1911, ASTROPHYSICAL J, V33, P397
[4]
1915, PUBLICATIONS ALLEGHE, V3, P167
[5]
1848, MONTHLY NOTICES, V9, P37
[6]
1916, LICK OBSERVATORY B, V8, P186