Exponential-Time Approximation of Hard Problems - Marek Cygan; Lukasz Kowalik; Marcin Pilipczuk; Mateusz Wykurz (CoRR, 2008)

Exponential-time approximation of weighted set cover. - Marek Cygan; Lukasz Kowalik; Mateusz Wykurz (Inf. Process. Lett., 2009)