TY  - RPRT
TI  - The effect of external representations on numeric tasks.
AU  - Jiajie Zhang
AU  - Hongbin Wang
PY  - 2005
DO  - 10.1080/02724980443000340
UR  - https://pubmed.ncbi.nlm.nih.gov/16194937/
ID  - 16194937
ER  -