@article {1782, title = {Probabilistic Guarded P Systems, A formal Definition}, journal = {Twelfth Brainstorming Week on Membrane Computing (BWMC2014)}, year = {2014}, pages = {183-206}, publisher = {F{\'e}nix Editora}, isbn = {978-84-940056-4-0}, url = {http://www.gcn.us.es/12bwmc_proceedings}, author = {Manuel Garc{\'\i}a-Quismondo and Miguel A. Mart{\'\i}nez-del-Amor and Mario J. P{\'e}rez-Jim{\'e}nez} }