A. . Madhusudhana Reddy, S. Nayaka, P. . Chandramati Shankar, S. . Rajagopal Reddy, and B. . Ravi Prasad Rao, “New Distributional Records and Checklist of Lichens for Andhra Pradesh, India”, Indian Forester, vol. 137, no. 12, pp. 1371–1376, Dec. 2011.