Kusumaningrum, N. S. D., F. Handayani, H. Kusuma, C. B. Ropyanto, and D. A. Indraswari. “The Therapeutic Effects of Topical Application of Ozonized Olive Oil on Diabetic Ulcer Healing: A Literature Review ”. KnE Life Sciences, Vol. 4, no. 13, Oct. 2019, pp. 737–745, doi:10.18502/kls.v4i13.5332.