@TechReport{,
author = { Nathann Cohen and Darko Dimitrov and Roi Krakovski and Vida Vuka\v{s}inovi{\'c} and Riste \v{S}krekovsi },
title = { On Wiener Index of Graphs and Their Line Graphs },
year = { 2009 },
month = { December },
number = { B 09-03 },
institution = { Institut f{\"u}r Informatik, Freie Universit{\"a}t Berlin },
}
