J. Faherty, F.M. Walter, J. Anderson. The trigonometric parallax of the neutron star Geminga. „Astrophysics and Space Science”. 308, s. 225, 2007. DOI: 10.1007/s10509-007-9368-0. Bibcode: 2007Ap&SS.308..225F. (ang.).
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J. Faherty, F.M. Walter, J. Anderson. The trigonometric parallax of the neutron star Geminga. „Astrophysics and Space Science”. 308, s. 225, 2007. DOI: 10.1007/s10509-007-9368-0. Bibcode: 2007Ap&SS.308..225F. (ang.).
Bignami, G.F.; Caraveo, P.A.; Lamb, R.C. An identification for „GEMINGA” (2CG 195+04) 1E 0630+178: a unique object in the error box of the high-energy gamma-ray source. „The Astrophysical Journal”. 272, s. L9-L13, 1983. DOI: 10.1086/184107. Bibcode: 1983ApJ...272L...9B. (ang.).