1. Y.A. Ban, S. Bespamyatnikh, N.H. Mustafa, On a conjecture on Wiener indices in combinatorial chemistry, in: Proc. of the 9th International Computing and Combinatorics Conference ’03, 2003, pp. 509–518 (The journal version will appear in Algorithmica, 2004)
2. Wiener index of trees: Theory and applications;Dobrynin;Acta Appl. Math.,2001
3. D. Goldman, S. Istrail, G. Lancia, A. Piccolboni, B. Walenz, Algorithmic strategies in combinatorial chemistry, in: Proc. 11th ACM-SIAM Sympos. Discrete Algorithms, 2000, pp. 275–284
4. Mathematical Concepts in Organic Chemistry;Gutman,1986
5. The sum of all distances in bipartite graphs;Gutman;Math. Slovaca,1995