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A generalized majorization method for least souares multidimensional scaling of pseudodistances that may be negative
Heiser, Willem, (1991)
The analytical solution of the additive constant problem
Cailliez, Francis, (1983)
A dynamic generalization of the Rasch model
Verhelst, N., (1993)
Extensions of the partial credit model
Glas, C., (1989)