@article {1500,
	title = {On the fluidization of Petri nets and marking homothecy},
	journal = {Nonlinear Analysis: Hybrid Systems},
	volume = {12},
	year = {2014},
	month = {05/2014},
	pages = {3-19},
	doi = {10.1016/j.nahs.2013.11.002},
	author = {E. Fraca and J. Julvez and M. Silva}
}

