共 15 条
- [1] BUCERIUS H, 1932, ASTRON NACHR, V246, P33
- [3] EICHHORN H, 1962, 1 SCI REP
- [4] EICHHORN H, UNPUB
- [5] Eichhorn H., 1960, ASTRON NACHR, V285, P233
- [7] FURUHJELM R, 1906, THESIS HELSINGSFORS
- [8] GILL D, 1913, CAPE ASTROGRAPHIC ZO, V1, P38
- [9] HECKMANN O, 1954, ZWEITER KAT ASTRON G, V10, pE1