%0 Journal Article
%A Lenni Haapasalo
%A Đorđe Kadijević
%T Using Innovative Technology for Revitalizing Formal and Informal Mathematics: a Special View on the Interplay Between Procedural and Conceptual Knoledge
%J The Teaching of Mathematics
%D 2003
%P 81 
%V VI
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TM2_2003_VI_2_a1/
%G en
%F TM2_2003_VI_2_a1