@article{KJM_2021_45_4_a1,
     author = {M. J. Nikmehr and A. Azadi},
     title = {Perfect {Nilpotent} {Graphs}},
     journal = {Kragujevac Journal of Mathematics},
     pages = {521 },
     publisher = {mathdoc},
     volume = {45},
     number = {4},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2021_45_4_a1/}
}