BAPAT, M.N.; SONWANE, R.K. On Composition of Natural Numbers. SCHOOL SCIENCE, [S. l.], v. 44, n. 2, p. p.58–60, 2006. Disponível em: http://ejournals.ncert.gov.in/index.php/SS/article/view/243. Acesso em: 16 jun. 2025.