BRINCKOVÁ, Jaroslava - HAVIAR, Miroslav - DZÚRIKOVÁ, Iveta. Tangram in mathematics for lower secondary school : main piloting. In Lower secondary school teacher training in mathematics : comparison and best practices. 1. vyd. - Pisa : Edizioni Plus - Pisa University Press, 2006. ISBN 978-88-8492-436-0, s. 205-215. Available on Internet: <http://losstt-in-math.dm.unipi.it/>