@conference {1162,
	title = {Some initial experiments with adaptive survey designs for structured questionnaires},
	booktitle = {Paper presented at the New Methods and Applications in Consumer Research Conference},
	year = {1993},
	address = {Cambridge MA},
	author = {Singh, J.}
}
@article {702,
	title = {Adaptive designs for Likert-type data: An approach for implementing marketing research},
	journal = {Journal of Marketing Research},
	volume = {27},
	year = {1990},
	pages = {304-321},
	author = {Singh, J. and Howell, R. D. and Rhoads, G. K.}
}
