Noening Andrijati, Heri Retnawati, and Sudiyatno. “Analysis of Item Characteristics in Elementary School Mathematics Reasoning Assessment Using Item Response Theory With the Generalized Partial Credit Model”. Educational Administration: Theory and Practice, vol. 30, no. 4, Apr. 2024, pp. 3799-10, doi:10.53555/kuey.v30i4.2129.