M. Ilomuanya, G. Ogbewele, Y. Osei, U. Ubani-Ukoma, and A. Sowemimo, “Optimisation of clotrimazole emulgel using essential oils of Citrus sinensis and Zingiber officinale as permeation enhancers”, WAJP, vol. 29, no. 2, pp. 19–33, Jun. 2026, doi: 10.82351/wajp.vol29no2.468.