TY  - RPRT
TI  - Development of the middle concept.
AU  - F M Rabinowitz
AU  - M L Howe
PY  - 1994
DO  - 10.1006/jecp.1994.1020
UR  - https://pubmed.ncbi.nlm.nih.gov/8027708/
ID  - 8027708
ER  -