Iqbal, A. A. M., M. Momin, S. Khan, and F. Khan. “Analytical Method Development and Validation of Erlotinib Hydrochloride in Bulk and Pharmaceutical Dosage Form by RP-HPLC ”. Journal of Innovations in Applied Pharmaceutical Science (JIAPS), Vol. 3, no. 3, Sept. 2018, pp. 01-06, https://www.saapjournals.org/index.php/jiaps/article/view/195.