@article{MO_2006_4_a5,
     author = {G. Malaty},
     title = {Can {Visualization} {Develop} a {Casual} {Thinking?}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {37--40},
     year = {2006},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2006_4_a5/}
}