@ARTICLE{,
author = {},
title = {Vertex-PI Index of Some Nanotubes},
volume = {3},
number = {1},
abstract ={The vertex version of PI index is a molecular structure descriptor which is similar to vertex version of Szeged index. In this paper, we compute the vertex-PI index of TUC4C8(S), TUC4C8(R) and HAC5C7[r, p]. },
URL = {http://ijmsi.ir/article-1-44-en.html},
eprint = {http://ijmsi.ir/article-1-44-en.pdf},
journal = {Iranian Journal of Mathematical Sciences and Informatics},
doi = {10.7508/ijmsi.2008.01.005},
year = {2008}
}