Mario J. Pérez-Jiménez, Álvaro Romero Jiménez, Fernando Sancho-Caparrini. Computationally Hard Problems Addressed Through P Systems. In Gabriel Ciobanu, Mario J. Pérez-Jiménez, Gheorghe Paun, editors, Applications of Membrane Computing. Natural Computing Series, pages 315-346, Springer, 2006. [doi]
Abstract is missing.