@article{DLT-J-2004-Freund05,
	author        = "Rudolf Freund",
	doi           = "10.1142/S0129054105003224",
	journal       = "{International Journal of Foundations of Computer Science}",
	number        = 4,
	pages         = "663--682",
	publisher     = "{World Scientific}",
	title         = "{P Systems working in the sequential mode on arrays and strings}",
	volume        = 16,
	year          = 2005,
}