1
by Hemaspaandra, Lane A., Ogihara, Mitsunori
Published 2002
Springer Berlin Heidelberg
...Texts in Theoretical Computer Science. An EATCS Series...

2
by Hemaspaandra, Lane A., Torenvliet, Leen
Published 2003
Springer Berlin Heidelberg
...Monographs in Theoretical Computer Science. An EATCS Series...