Bisht, R.K. and Radenović, S. 2026. Fixed point results for four-point Kannan mappings with applications to fractional BVPs and Diophantine equations. Nonlinear Analysis: Modelling and Control. 31, (Jul. 2026), 1–22. DOI:https://doi.org/10.15388/namc.2026.31.47654.