@article {401,
	title = {On acceptance conditions for membrane systems: characterisations of L and NL},
	journal = {The Complexity of Simple Programs},
	year = {2008},
	month = {December},
	pages = {225-242},
	publisher = {Cork University Press},
	address = {Cork, Ireland},
	isbn = {978-1-906642-00-6},
	url = {http://www.cs.us.es/~dwoods/download/MurphyWoods-CSP08.pdf},
	author = {Niall Murphy and Damien Woods},
	editor = {Turlough Neary and Damien Woods and Anthony K. Seda and Niall Murphy}
}
