@article{NANO_2020_11_2_a0,
     author = {N. De},
     title = {Reduced second {Zagreb} index of product graphs},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {131--137},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2020_11_2_a0/}
}