@conference {economakos2006recursive,
	title = {Recursive synthesis of robust supervisory controllers for vector discrete event systems},
	booktitle = {IECON 2006-32nd Annual Conference on IEEE Industrial Electronics},
	year = {2006},
	pages = {4731{\textendash}4736},
	publisher = {IEEE},
	organization = {IEEE},
	author = {Economakos, Christoforos E and Fotis N. Koumboulis and Tzamtzi, Maria P}
}
