T. SRINIVASARAO. K-Horizontal Symmetric Measurable Functions. International Journal of Mathematics And its Applications, [S. l.], v. 6, n. 1 - E, p. 1063–1066, 2018. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/1183. Acesso em: 12 may. 2024.