Liu SY, Trope GE, Buys YM, El-Defrawy SR, Khan AM, Jin YP. Visual impairment and the Ontario disability support program. Can J Ophthalmol. 2020 Jun;55(3):212-20. doi: 10.1016/j.jcjo.2019.12.009
Scrams DJ, McLeod LD. An expected response function approach to graphical differential item functioning. J Educ Meas. 2000 Jan 1;37(3):263-77.
Williams VSL, Rosa KR, McLeod L, Thissen D, Sanford EE. Projecting to the NAEP Scale: results from the North Carolina End‐of‐Grade Testing Program. J Educ Meas. 1998 Dec;35(4):277-96. doi: 10.1111/j.1745-3984.1998.tb00539.x
Williams VSL, Pommerich M, Thissen D. A comparison of developmental scales based on Thurstone methods and item response theory. J Educ Meas. 1998 Jun;35(2):93-107.