Padmakar V. Khadikar, Anjani Phadnis, Anjali Shrivastava, “QSAR study on toxicity to aqueous organisms using the PI index”, Bioorganic & Medicinal Chemistry, 10, no. 4, 2002, 1181
Vijay K. Agrawal, Ruchi Sharma, Padmakar V. Khadikar, “QSAR Studies on Antimalarial Substituted Phenyl Analogues and Their N ω -Oxides”, Bioorganic & Medicinal Chemistry, 10, no. 5, 2002, 1361
Kunal Roy, Rudra Narayan Das, Advanced Methods and Applications in Chemoinformatics, 2012, 380
Mircea V. Diudea, “Indices of Reciprocal Properties or Harary Indices”, J. Chem. Inf. Comput. Sci., 37, no. 2, 1997, 292
Hanyuan Deng, Shubo Chen, “PI indices of pericondensed benzenoid graphs”, J Math Chem, 43, no. 1, 2008, 19
Dheeraj Mandloi, Sheela Joshi, Padmakar V. Khadikar, Navita Khosla, “QSAR study on the antibacterial activity of some sulfa drugs: building blockers of Mannich bases”, Bioorganic & Medicinal Chemistry Letters, 15, no. 2, 2005, 405
Milan Randić, Jure Zupan, Topology in Chemistry, 2002, 249
Janez Žerovnik, “Szeged Index of Symmetric Graphs”, J. Chem. Inf. Comput. Sci., 39, no. 1, 1999, 77
Mircea V. Diudea, “Cluj polynomials”, J Math Chem, 45, no. 2, 2009, 295
M.H. Khalifeh, H. Yousefi-Azari, A.R. Ashrafi, “A matrix method for computing Szeged and vertex PI indices of join and composition of graphs”, Linear Algebra and its Applications, 429, no. 11-12, 2008, 2702