<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Miguel A. Gutiérrez-Naranjo</style></author><author><style face="normal" font="default" size="100%">Mario J. Pérez-Jiménez</style></author><author><style face="normal" font="default" size="100%">Agustín Riscos-Núñez</style></author><author><style face="normal" font="default" size="100%">Francisco J. Romero-Campero</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">P systems with active membranes, without polarizations and without dissolution: A characterization of P</style></title><secondary-title><style face="normal" font="default" size="100%">Lecture Notes in Computer Science</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.springerlink.com/content/d8133yrhbnhwgf40/?p=04e911661585426488476f9d64170e0f&pi=10</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">Springer</style></publisher><pub-location><style face="normal" font="default" size="100%">Amsterdam, The Netherlands</style></pub-location><volume><style face="normal" font="default" size="100%">3699</style></volume><pages><style face="normal" font="default" size="100%">105-116</style></pages><isbn><style face="normal" font="default" size="100%">978-3-540-29100-8</style></isbn><abstract><style face="normal" font="default" size="100%">We study the computational efficiency of recognizer P systems with active membranes without polarizations and without dissolution. The main result of the paper is the following: the polynomial computational complexity class associated with the class of recognizer P systems is equal to the standard complexity class P.</style></abstract></record></records></xml>