@article {978,
	title = {Foreword. Special Issue: Membrane Computing},
	journal = {International Journal of Unconventional Computing},
	volume = {9},
	year = {2013},
	month = {10/2013},
	pages = {347-349},
	publisher = {Old City Publishing Inc.},
	address = {Philadelphia, USA},
	issn = {1548-7199},
	url = {http://www.oldcitypublishing.com/IJUC/IJUCcontents/IJUCv9n5-6contents.html},
	author = {Marian Gheorghe and Gheorghe Paun and Mario J. P{\'e}rez-Jim{\'e}nez}
}
