7Ng CS, Lee TW, Wan S,Video assisted thoracic surgery in the management of spontaneous pneumothorax: the current status, J,Postgrad Med J. 2006.3;82(965):179-185.
8Abdala OA,Levy RR,etal,Advantages of video assisted thoracic surgery in the treatment of spontaneous pneumothorax J,Medicina (B Aires), 2001 ; 61 (2): 157-160.