BISHT, Ravindra K.; RADENOVIĆ, Stojan. Fixed point results for four-point Kannan mappings with applications to fractional BVPs and Diophantine equations. Nonlinear Analysis: Modelling and Control, [S. l.], v. 31, p. 1–22, 2026. DOI: 10.15388/namc.2026.31.47654. Disponível em: https://www.journals.vu.lt/nonlinear-analysis/article/view/47654. Acesso em: 9 jul. 2026.