KUMAR, V. Srinivasa; SWAMY, K. Kumara; NARAYANA, TVL. ON AN EXTENSION TO KHAN’S FIXED POINT THEOREM. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 37, p. 92–97, 2017. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/6826. Acesso em: 26 sep. 2026.