Francesco Bernardini, Marian Gheorghe, Mike Holcombe. Eilenberg P Systems with Symbol-Objects. In Natasa Jonoska, Gheorghe Paun, Grzegorz Rozenberg, editors, Aspects of Molecular Computing, Essays Dedicated to Tom Head on the Occasion of His 70th Birthday. Volume 2950 of Lecture Notes in Computer Science, pages 49-60, Springer, 2004. [doi]
Abstract is missing.