Reference 1: PocketMatch: A new algorithm to compare binding sites in protein structures (Kalidas Yeturu and Nagasuma Chandra, 2008)
Reference 2: Nagarajan, D., & Chandra, N. (2013, February). PocketMatch (version 2.0): A parallel algorithm for the detection of structural similarities between protein ligand binding-sites. In Parallel Computing Technologies (PARCOMPTECH), 2013 National Conference on (pp. 1-6). IEEE.