@proceedings {271, title = {Unidimensional and multidimensional models for item response theory}, journal = {Proceedings of the 1982 Computerized Adaptive Testing Conference}, year = {1985}, month = {06/1982}, pages = {127-148}, publisher = {University of Minnesota, Department of Psychology, Psychometrics Methods Program}, address = {Minneapolis, MN. USA}, author = {McDonald, R. P.} }