Unthank, J.L. Fundamental Principles of Surgical Lasers. In: Lasers in Head and Neck Surgery, edited by E.C. Weisberger. Igaku-Shoin Medical Publishers, Inc., NY, 1991.
Lalka, S.G. and Unthank, J.L. Operative management of lower extremity venous insufficiency. IN: Vascular Diseases: Surgical and Interventional Therapy (Vol. 2). Strandness, D.E., Jr., and Van Breda, A. (eds.), Churchill Livingstone, New York, 1994. pp. 983-998.