Screening of potent phytochemical inhibitors against SARS-CoV-2 protease and its two Asian mutants. - Muhammad Ijaz; Noor Rahman; Gul-E-Nayab; Sadaf Niaz; Zarrin Basharat; Luca Rastrelli; Sivaraman Jayanthi; Thomas Efferth; Haroon Khan (Comput. Biol. Medicine, 2021)