PAREKH, B. U. ગણિતપોથી . Vidyapith (વિદ્યાપીઠ), [S. l.], v. 23, n. 5, p. 59, 1985. Disponível em: http://journal.gujaratvidyapith.org/index.php/vp/article/view/987. Acesso em: 21 mar. 2025.