@article{02012653, title = {Shields-Harary numbers of graphs with respect to continuous concave cost functions.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2003}, year = {2003}, pages = {3921-3930}, doi = {10.1155/S0161171203212059}, zbl = {1031.05123}, language = {en}, url = {http://dml.mathdoc.fr/item/02012653} }
Holliday, John; Johnson, Peter. Shields-Harary numbers of graphs with respect to continuous concave cost functions.. International Journal of Mathematics and Mathematical Sciences, Tome 2003 (2003) pp. 3921-3930. doi : 10.1155/S0161171203212059. http://gdmltest.u-ga.fr/item/02012653/