SHAH, N. P. Theorem & Problems by Mathematical Induction. BIBECHANA, [S. l.], v. 2, p. 21–23, 2018. DOI: 10.3126/bibechana.v2i0.19231. Disponível em: https://www.nepjol.info/index.php/BIBECHANA/article/view/19231. Acesso em: 19 may. 2024.