TY  - RPRT
TI  - Foundation for nonlinear models with thresholds for longitudinal data.
AU  - M J Bartholomew
PY  - 2000
DO  - 10.1081/bip-100101979
UR  - https://pubmed.ncbi.nlm.nih.gov/11104388/
ID  - 11104388
ER  -