Hosoya H.Topological index:a newly proposed quantity characterizing the toplogical nature of structural isomers ofsaturated hydrocarbons[J].Bull Chem Soc Jpn,1971,4:2332-2339.

Gutman I,Yeh Y N,Lee S L,Luo Y L.Some recent results in the theory of Wiener number[J].Indian J Chem,1993,32A:651-661.

Gutman I,Potgieter J H.Wiener index and intermolecular forces[J].J Serb Chem Soc,1997,62:185-192.

Diudea M,Stefu M.Wiener index of C4C8 nanotubes[J].MATCH Commun Math Comput Chem,2004,50:133-144.

Gutman I.Extremal hexagonal chains[J].Math Chem,1993,12:197-210.

Dobrymin A A,Entriger R,Gutman I.Wiener index of trees:theory and applications[J].Acta Appl Math,2001,66:211-249.

Fischermann M,Gutman I,Haffman A,Rautenbach D,Vidovic D and Volkman L.Extemal Chemical trees[J].Z Natur-forsch,2002,57a:49-52.

Chen X L,Zhao B,Zhao P Y.Six-membered ring spiro chains with extremal Merrifield-Simmons index and Hosoya index[J].MATCH Commun Math Comput Chem,2009,Vol 62,No 3:657-665.

Tang Z K,Deng H Y.The(n,n)-graphs with the first three extremal Wiener indices[J].Journal of Mathematical Chemistry,2008,Vol 43,No 1:60-74.