Degree-based topological indices of geranyl and farnesyl penicillin G bioconjugate structure Muhammad Naeem, Abdul Rauf, Saba Maqbool and Adnan Aslam Eur. Phys. J. Plus, 137 3 (2022) 303 Published online: 04 March 2022 DOI: 10.1140/epjp/s13360-022-02513-0