Najeeb, Q., N. Bhaskar, I. . Masood, and S. . Wadhwa. “Malondialdehyde (MDA) and Superoxide Dismutase (SOD) Levels – Distinguishing Parameters Between Benign and Malignant Pleural Effusions”. Free Radicals and Antioxidants, vol. 2, no. 2, Apr. 2012, pp. 08-11, doi:10.5530/ax.2012.2.2.2.