Tsygankova, L., V. Bryaksina, A. Uryadnikov, and L. Kanaeva. “Using Expired Drotaverine for Corrosion Protection of Steel in HCl Solution”. Chemical Bulletin of Kazakh National University, Vol. 115, no. 2, June 2025, p. In Press, doi:https://doi.org/10.15328/cb1403.