Kalish, Melvin S., "The Light Variation of the Eclipsing Binary BD + 30°2163" from the Publications of the Astronomical Society of the Pacific, Vol. 77, No. 454, February,, 1965

Kalish, Melvin S., "The Light Variation of the Eclipsing Binary BD + 30°2163" from the Publications of the Astronomical Society of the Pacific, Vol. 77, No. 454, February,, 1965, box-folder: 47. Georgetown Observatory Collection, GRB-000010. Georgetown University Rare Books , Booth Family Center for Special Collections. https://findingaids.library.georgetown.edu/repositories/14/archival_objects/1163507 Accessed June 16, 2024.