TY  - BOOK
AU  - Davier, Matthias von  .
TI  - Multivariate and mixture distribution rasch models: extensions and applications / 
SN  - 0-387-32916-1
U1  - B28ObM2 
PY  - 2007///
CY  - New York : 
PB  - Springer-Verlag , 
KW  - Rasch models
ER  -