TY  - BOOK
AU  - Singer Judith D
AU  -  Willett John B
TI  - Applied longitudinal data analysis: modeling change and event occurrence
SN  - 0195152964 (hbd)
U1  - B28:31, P3 
PY  - 2003///
CY  - Oxford
PB  - Oxford University Press       
KW  -  Longitudinal data
KW  - Statistics
N1  - Bibliographical references 613-626p
ER  -