@article {717, title = {Special Issue-Natural Computing: Theory and applications. Preface}, journal = {International Journal of Foundations of Computer Science}, volume = {22}, year = {2011}, pages = {1-6}, publisher = {World Scientific}, address = {London, U.K.}, issn = {0129-0541}, author = {Rudolf Freund and Marian Gheorghe and Solomon Marcus and Victor Mitrana and Mario J. P{\'e}rez-Jim{\'e}nez} }