@article{01184381, title = {Games, complexity classes, and approximation algorithms.}, journal = {Documenta Mathematica}, year = {1998}, pages = {429-439}, zbl = {1034.68521}, language = {en}, url = {http://dml.mathdoc.fr/item/01184381} }
Feigenbaum, Joan. Games, complexity classes, and approximation algorithms.. Documenta Mathematica, (1998), pp. 429-439. http://gdmltest.u-ga.fr/item/01184381/