@article {257, title = {One More Universality Result for P Systems with Objects on Membranes}, journal = {Third Brainstorming Week on Membrane Computing}, year = {2005}, month = {1/31/05/-2/4/05}, pages = {263-273}, publisher = {F{\'e}nix Editora}, address = {Sevilla, Espa{\~n}a}, isbn = {84-609-6771-9}, author = {Gheorghe Paun}, editor = {Miguel A. Guti{\'e}rrez-Naranjo and Agust{\'\i}n Riscos-N{\'u}{\~n}ez and Francisco J. Romero-Campero and Dragos Sburlan} }