@article{KJM_2015_39_2_a4,
     author = {Mahdieh Azari and Ali Iranmanesh},
     title = {Clusters and {Various} {Versions} of {Wiener-Type} {Invariants}},
     journal = {Kragujevac Journal of Mathematics},
     pages = {155 },
     publisher = {mathdoc},
     volume = {39},
     number = {2},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2015_39_2_a4/}
}