@book{13242, author = {Erlebach, Thomas. and Persinao, Giuseppe. and SpringerLink (Online service)}, title = {Approximation and Online Algorithms}, publisher = {Springer Berlin Heidelberg,}, year = {2006.}, series = {Lecture Notes in Computer Science,}, address = {Berlin, Heidelberg :}, url = {http://dx.doi.org/10.1007/11671411} }