@article{KJM_2018_42_3_a9,
     author = {S. K. Patel and Jayesh Vasava},
     title = {On {Prime} {Labeling} of {Some} {Union} {Graphs}},
     journal = {Kragujevac Journal of Mathematics},
     pages = {441 },
     publisher = {mathdoc},
     volume = {42},
     number = {3},
     year = {2018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2018_42_3_a9/}
}