@article{DMGT_2020_40_1_a21,
     author = {Vu\v{c}kovi\'c, Bojan},
     title = {An {Improved} {Upper} {Bound} on {Neighbor} {Expanded} {Sum} {Distinguishing} {Index}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {323--329},
     publisher = {mathdoc},
     volume = {40},
     number = {1},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2020_40_1_a21/}
}