TY  - RPRT
TI  - Grouping and linear regression.
AU  - K K Lan
AU  - M Halperin
AU  - G T Waldman
PY  - 1982
DO  - 10.1016/0021-9681(82)90080-7
UR  - https://pubmed.ncbi.nlm.nih.gov/7061680/
ID  - 7061680
ER  -