¬ródło: | W: Engineering graphics. BALTGRAF-9. Proceedings of the Ninth International Conference on Geometry & Engineering Graphics, Riga, Latvia, June 5-6, 2008. Ed. M. Dobelis. Riga Technical University, International Association BALTGRAF. Riga : Riga Technical University, 2008, s. 145-149, bibliogr. 4 poz. |