دوره 3، شماره 1 - ( 2-1387 )
جلد 3 شماره 1 صفحات 49-62 |
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چکیده:
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].