Position dependent mass (PDM) Klein–Gordon scalar particles in Bonnor-Melvin-Lambda space-time Faizuddin Ahmed and Abdelmalek Bouzenada Eur. Phys. J. Plus, 139 10 (2024) 911 Published online: 21 October 2024 DOI: 10.1140/epjp/s13360-024-05706-x