In this paper, we obtain some analytical expressions and give two simple formulae for the expected values of the Wiener indices of the random Phenylene and Spiro hexagonal chains.
Citation
Li Ma, Hong Bian, Bingjie Liu, Haizheng Yu. The Expected Values of the Wiener Indices in the Random Phenylene and Spiro Chains[J], Ars Combinatoria, Volume 130. 267-274. .