Pressure-induced topological phase transition in XMR material YbAs: a first-principles study Mukhtiyar Singh, Ramesh Kumar and Ramesh K. Bibiyan Eur. Phys. J. Plus, 137 5 (2022) 633 Published online: 28 May 2022 DOI: 10.1140/epjp/s13360-022-02841-1