Olga A. Gracheva; Fazil A. Medetkhanov; Dina M. Mukhutdinova; Ilsur G. Galimzyanov; Alfiya R. Shageeva; Damir R. Amirov; Bulat F. Tamimdarov; Sergey Yu. Smolentsev. Study of the Chemical Compatibility of Two Active Substances and Stability of Their Solution. Int. J. Res. Pharm. Sci. 2020, 11, 4283-4287.