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@article{PMF_1935_42_1_a9, author = {Lipi\'nski, St.}, title = {Delta {Cephei}}, journal = {Prace Matematyczno-Fizyczne}, pages = {201--208}, publisher = {mathdoc}, volume = {42}, number = {1}, year = {1935}, language = {de}, url = {http://geodesic.mathdoc.fr/item/PMF_1935_42_1_a9/} }
Lipiński, St. Delta Cephei. Prace Matematyczno-Fizyczne, Tome 42 (1935) no. 1, pp. 201-208. http://geodesic.mathdoc.fr/item/PMF_1935_42_1_a9/