21. Seong H, Moon DS, Khang G, Lee JS, Lee HB, Polym.(Korea), 26(1), 128 (2002)
22. Khang G, Lee HBBiomedical Polymer, Korean Chemical Society Press, Munundang, Seoul (2001)
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31. Seo SA, Choi HS, Cho JC, Khang G, Rhee JM, Lee HB, Biomater. Res., 5, 35 (2001)
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34. Lee HB, Khang G, Cho JC, Rhee JM, Lee JSFentanyl-Loaded PLGA Microspheres for Local Anesthesia, in Controlled Drug Delivery; Designing Technologies for the Future, eds. by K. Park and R.J. Mrnsy, p. 385, ACS Symp. Series 752, ACS Washington D.C. (2000)