Geodesic
Counterexamples for properties of line graphs of graphs of diameter two
Kragujevac Journal of Mathematics, Tome 34 (2010) no. 1.

Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

Some errors in a recently published paper [Ramane et al., Distance spectra and distance energies of iterated line graphs of regular graphs, {t Publ. Inst. Math.\/} {\bf 85} (2009) 39-46] are pointed out. These pertain to conditions under which the iterated line graphs of a graph of diameter two have also diameter two. 
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     author = {Harishchandra S. Ramane and Ivan Gutman},
     title = {Counterexamples for properties of line graphs of graphs of diameter two},
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Harishchandra S. Ramane; Ivan Gutman. Counterexamples for properties of line graphs of graphs of diameter two. Kragujevac Journal of Mathematics, Tome 34 (2010) no. 1. http://geodesic.mathdoc.fr/item/KJM_2010_34_1_a12/