by Carlos Martín-Vide, Gheorghe Páun, Giancarlo Mauri, Grzegorz Rozenberg, Arto Salomaa
This volume is based on papers presented at the Workshop on Membrane Computing, WMC 2003, which took place in Tarragona, Spain, in the - riod July 17–July 22, 2003. This was the Fourth Annual Membr…