@misc{Cohen2009, author = {Cohen, Nathann and Dimitrov, Darko and Krakovski, Roi and Škrekovski, Riste and Vukašinović, Vida}, year = {2009}, title = {On Wiener index of graphs and their line graphs}, howpublished = "http://dx.doi.org/10.17169/refubium-22989", }