TY  - JOUR
AU  - G. Maresch 
TI  - Spatial Ability -- The Phases of Spatial Ability Research
JO  - Journal for geometry and graphics
PY  - 2013
SP  - 237
EP  - 25
VL  - 17
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JGG_2013_17_2_JGG_2013_17_2_a9/
ID  - JGG_2013_17_2_JGG_2013_17_2_a9
ER  -