SK. SAMSUL ALAM. Finding Rank Orders of the Elementary Concepts of Arithmetic Used in I.C.S.E. Examination. International Journal of Mathematics And its Applications, [S. l.], v. 3, n. 4 - D, p. 85–91, 2015. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/519. Acesso em: 19 may. 2024.