Claudio Zandron Alberto Leporati Claudio Ferretti Giancarlo Mauri Mario J. Pérez-Jiménez On the Computational Efficiency of Polarizationless Recognizer P Systems with Strong Division and Dissolution. 79-91 2008 87 Fundam. Inform. 1 http://iospress.metapress.com/content/95t4416hp5w165m2/ db/journals/fuin/fuin87.html#ZandronLFMP08