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Fang, L., Kobayashi, Y., Numajiri, S., Kobayashi, D., Sugibayashi, K., & Morimoto, Y. (2002). The Enhancing Effect of a Triethanolamine–Ethanol–Isopropyl Myristate Mixed System on the Skin Permeation of Acidic Drugs. Biological & Pharmaceutical Bulletin, 25(10), 1339–1344. doi:10.1248/bpb.25.1339 
10.1248/bpb.25.1339