TY  - GEN
AU  - Linden, Wim J. van der
AU  - Hamdleton, Ronald K. 
TI  - Handbook of modern item response theory
SN  - 0387946616
U1  - 150.287 
PY  - 1997///
CY  - New York
PB  - Springer
KW  - Psychology
ER  -