@book{13189, author = {Győri, Ervin. and Katona, Gyula O. H. and SpringerLink (Online service)}, title = {Horizons of Combinatorics}, publisher = {Springer Berlin Heidelberg,}, year = {2008.}, series = {Bolyai Society Mathematical Studies,}, address = {Berlin, Heidelberg :}, edition = {1a ed.}, url = {http://dx.doi.org/10.1007/978-3-540-77200-2} }