TY  - BOOK
AU  - Tsiatis Anastasios A
TI  - Semiparametric theory and missing data
SN  - 0-387-32448-8
U1  - 000SA.09 
PY  - 2006///
CY  - New York
PB  - Springer-Verlag
KW  - Missing observations(Statistics)
KW  - Parameter estimation
ER  -