Haokip, N., and N. Goswami. “Some Fixed Point Theorems for Generalized Kannan Type Mappings in B-Metric Spaces”. Proyecciones (Antofagasta, On Line), vol. 38, no. 4, Oct. 2019, pp. 763-82, doi:10.22199/issn.0717-6279-2019-04-0050.