| 000 | 00630nam a22001577a 4500 | ||
|---|---|---|---|
| 005 | 20130627083336.0 | ||
| 008 | 130627t xxu||||| |||| 00| 0 eng d | ||
| 022 | _a00131644 | ||
| 100 | _aTIAN, Wei | ||
| 245 |
_aNumerical differentiation method for computing error covariance matrices in item response theory modeling : An evaluation and a new proposal _cTIAN, Wei , Li Cai, David Thissen, Tao Xin |
||
| 260 |
_aLos Angeles _bSage _c2013 |
||
| 300 | _aVol.73 No. 3 (pp.412-439) | ||
| 440 | _aEducational and Psychological Measurement | ||
| 942 |
_2lcc _cART |
||
| 999 |
_c154151 _d154111 |
||