@article{GDZPPN002024322, title = {On the Corona of Two Graphs.}, journal = {Aequationes mathematicae}, volume = {5}, year = {1970}, pages = {322-325}, zbl = {0198.29302}, url = {http://dml.mathdoc.fr/item/GDZPPN002024322} }
Harary, Frank; Frucht, Roberto. On the Corona of Two Graphs.. Aequationes mathematicae, Tome 5 (1970) pp. 322-325. http://gdmltest.u-ga.fr/item/GDZPPN002024322/