@inbook {1312,
	title = {Resource Allocation Systems: Some complexity results on the $S^4PR$ class},
	booktitle = {Formal Techniques for Networked and Distributed Systems {\textendash} FORTE 2006},
	series = {Lecture Notes in Computer Science},
	volume = {4229},
	year = {2006},
	month = {09/2006},
	pages = {323-339},
	publisher = {Springer-Verlag},
	organization = {Springer-Verlag},
	address = {Berlin},
	issn = {0302-9743},
	doi = {10.1007/11888116_24},
	url = {http://dx.doi.org/10.1007/11888116_24},
	author = {J.P. L{\'o}pez-Grao and J.M. Colom},
	editor = {E. Najm and J-F. Pradat-Peyre and V-V. Donzeau-Gouge}
}

