DR. SHOBHA LAL. PIGEON HOLE PRINCIPLE AND MATHEMATICAL INDUCTION CONTRACTION. PalArch’s Journal of Archaeology of Egypt / Egyptology, [S. l.], v. 17, n. 7, p. 6060-6068, 2020. Disponível em: https://archives.palarch.nl/index.php/jae/article/view/2901. Acesso em: 7 jul. 2025.