KOKNE, P.M.; ARDAD, A.N. AN INTRODUCTION TO VARIABLE STARS IN ASTRONOMY. Innovare Journal of Sciences, [S. l.], v. 8, n. 7, p. 75–77, 2020. Disponível em: https://www.journals.innovareacademics.in/index.php/ijs/article/view/38536. Acesso em: 11 dec. 2025.