Daniel Binkele-Raible, Ljiljana Brankovic, Marek Cygan, Henning Fernau, Joachim Kneis, Dieter Kratsch, Alexander Langer, Mathieu Liedloff, Marcin Pilipczuk, Peter Rossmanith, Jakub Onufry Wojtaszczyk. Breaking the 2:::n:::-barrier for Irredundance: Two lines of attack. J. Discrete Algorithms, 9(3):214-230, 2011. [doi]
Abstract is missing.