Singh, V., R. D. Gupta, and U. V. S. Teotia. “Subduing the Nail Barrier With Novel Herbal Penetration Enhancers for Transungual Delivery System”. Journal of Applied Pharmaceutical Research, vol. 3, no. 2, May 2015, pp. 16-21, https://japtronline.com/index.php/joapr/article/view/53.