TY  - RPRT
TI  - Statistical methods for describing temporal order in longitudinal research.
AU  - T Q Miller
PY  - 1997
DO  - 10.1016/s0895-4356(97)00152-2
UR  - https://pubmed.ncbi.nlm.nih.gov/9368524/
ID  - 9368524
ER  -