@proceedings {776,
	title = {Digital tools in elementary mathematics education.},
	year = {2013},
	pages = {33-44},
	publisher = {Charles University},
	address = {Prag},
	author = {Krauthausen, G{\"u}nter},
	editor = {Novotn{\'a}, Jarmila and Moraov{\'a}, Hana}
}
