TY - Acta Psychologica Sinica A1 - Zhu Wei,Ding-Shuliang,Chen Xiaopan T1 - Minimum Chi-square/EM Estimation Under IRT Y1 - 2006-05-30 00:00:00.0 JF - Acta Psychologica Sinica JO - Acta Psychologica Sinica SP - 453 EP - 460 VL - 38 IS - 03 UR - {https://journal.psych.ac.cn/xlxb/EN/Y2006/V38/I03/453} N1 - ER -