^Lim, Henry W.; Herbert Honigsmann; John L. M. Hawk (2007). Photodermatology. CRC Press. pp. 402, 403. ISBN978-0-8493-7496-8.
^Roberts, Thomas L III. The emerging role of the CO2 lasers in aesthetic plastic surgery. Presented at the XIII Congress of the International Society for Aesthetic Plastic Surgery, New York, NY, Sept. 28-Oct. 1, 1995.