TY  - JOUR
AU  - D. Kusar 
TI  - Eleven Years of Testing Spatial Visualization Skills
JO  - Journal for geometry and graphics
PY  - 2012
SP  - 235
EP  - 246
VL  - 16
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JGG_2012_16_2_JGG_2012_16_2_a9/
ID  - JGG_2012_16_2_JGG_2012_16_2_a9
ER  -