@inbook {1939,
	title = {Item response theory, item calibration, and proficiency estimation},
	year = {1990},
	address = {H. Wainer (Ed.), Computerized adaptive testing: A primer (pp. 65-102). Hillsdale NJ: Erlbaum.},
	author = {Wainer, H., and Mislevy, R. J.}
}
