@article { ISI:A1988R852000025,
	title = {MINIMAX ESTIMATES IN A SEMIPARAMETRIC MODEL},
	journal = {JOURNAL OF THE AMERICAN STATISTICAL ASSOCIATION},
	volume = {83},
	number = {404},
	year = {1988},
	month = {DEC},
	pages = {1090-1096},
	publisher = {AMER STATISTICAL ASSOC},
	type = {Article},
	address = {1429 DUKE ST, ALEXANDRIA, VA 22314},
	issn = {0162-1459},
	doi = {10.2307/2290141},
	author = {Heckman, NE}
}
