@inbook {kotsiantis2003preventing,
	title = {Preventing student dropout in distance learning using machine learning techniques},
	booktitle = {Knowledge-Based Intelligent Information and Engineering Systems},
	year = {2003},
	pages = {267{\textendash}274},
	publisher = {Springer},
	organization = {Springer},
	author = {Kotsiantis, Sotiris B and Pierrakeas, CJ and Pintelas, Panayiotis E}
}
