Murat Ersöz, et al. “AN EFFECTIVE TREATMENT FOR PATIENTS WITH KNEE OSTEOARTHRITIS: INTRA- ARTICULER SODIUM HYALURONATE INJECTIONS COMBINED WITH HOME EXERCISE PROGRAM”. Archives of Rheumatology, vol. 16, no. 3, Sept. 2001, pp. 131-7, http://anadolupsikiyatri.net/index.php/pub/article/view/54.