@ARTICLE{JVLC17, 
	author = {Giuseppe Della Penna and  Sergio Orefice},
	title = {Qualitative Representation of Spatio-Temporal Knowledge}, 
	doi = {10.1016/j.jvlc.2018.10.002},
	journal = {Journal of Visual Languages & Computing},
	editor = {Elsevier},

	pages = {23--32},
	year = {2018},
	month = {12},
	volume = {49},
	number = {}
	
}