@article{DMGT_2014_34_3_a2,
     author = {Badura, Lidia},
     title = {Two graphs with a common edge},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {497--507},
     publisher = {mathdoc},
     volume = {34},
     number = {3},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2014_34_3_a2/}
}