@book{78468,
	author = {SOFSEM and Emde Boas, P. van.},
	title = {SOFSEM 2004 :},
	publisher = {Springer-Verlag,},
	year = {2004.},
	address = {New York :},
	url = {http://www.loc.gov/catdir/enhancements/fy0818/2003069498-d.html}
}