M. Y. Fares, M. M. Abdelrahman, H. M. Abdel-Rahman, and N. S. Abdelwahab, “Development and validation of different spectrophotometric and chromatographic methods for determination of clotrimazole and hydrocortisone in a topical cream”, Eur. J. Chem., vol. 8, no. 4, pp. 371–377, Dec. 2017.