John, Lincy, and Arun Kumar. “COMPARISON OF AMLODIPINE TRANSDERMAL PATCHES USING HYDROXYPROPYLMETHYLCELLULOSE AND CHITOSAN”. Asian Journal of Pharmaceutical and Clinical Research, vol. 7, no. 1, Jan. 2014, pp. 86-90, https://www.journals.innovareacademics.in/index.php/ajpcr/article/view/646.