TY  - BOOK
ED  - StataCorp LP.
TI  - Stata longitudinal-data/panel-data reference manual: release 12
SN  - 9781597180
U1  - 330 STA 2011 A013 Or. 
PY  - 2011///
CY  - College Station, Tex.
PB  - StataCorp LP
KW  - Longitudinal method
KW  - Panel analysis
N1  - "A Stata Press publication."
ER  -