Venkatesh, V., A. Elphine Prabahar, P. Venkata Suresh, Ch. Uma Maheswari, and N. Rama Rao. “HPTLC Method for the Simultaneous Estimation of Etophylline and Theophylline in Tablet Dosage Form”. Asian Journal of Chemistry 23, no. 1 (September 23, 2010): 309–311. Accessed July 23, 2024. https://asianpubs.org/index.php/ajchem/article/view/10132.