PI and Szeged Indices of some Benzenoid Graphs Related to Nanostructures. - Hassan Yousefi-Azari; B. Manoochehrian; A. R. Ashrafi (Ars Comb., 2007)

The PI index of product graphs. - Hassan Yousefi-Azari; B. Manoochehrian; A. R. Ashrafi (Appl. Math. Lett., 2008)

Szeged Index of a Zig-zag Polyhex Nanotube. - B. Manoochehrian; Hassan Yousefi-Azari; A. R. Ashrafi (Ars Comb., 2008)