فهرست مقالات Padmakar-Ivan index دسترسی آزاد مقاله صفحه چکیده متن کامل 1 - Topological relationship between electric quadrupole, hexadecapole moments, energy and Padmakar–Ivan index in armchair polyhex nanotubes TUVC6[2p,q] Majid Monajjemi Esmat Mohammadinasab Fatemeh Shafiei