“Photoelectric Observations and Analysis of Variability of the BET Ceptype Star KP Per”. Revista Mexicana de Astronomía y Astrofísica 5, no. 1 (January 1, 1980): 61–68. Accessed December 9, 2025. https://astronomia.unam.mx/journals/rmxaa/article/view/1981rmxaa. 5. 61j.