@article{KJM_2020_44_2_a1,
     author = {A. Ghalav and A. Ashrafi and I. Gutman},
     title = {New {Upper} and {Lower} {Bounds} for {Some} {Degree-based} {Graph} {Invariants}},
     journal = {Kragujevac Journal of Mathematics},
     pages = {181 },
     publisher = {mathdoc},
     volume = {44},
     number = {2},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2020_44_2_a1/}
}