K. V. Shukla, A. Sharma, and M. Yadav, “Formulation Development and Evaluation of Ethosomal Gel of Acyclovir for the Treatment of Herpes Zoster”, J. Drug Delivery Ther., vol. 9, no. 4-A, pp. 664–668, Aug. 2019, doi: 10.22270/jddt.v9i4-A.3548.