APA
Heckman J. J., Nesheim Lars, Matzkin Roza L & National Bureau Of Economic Research. (2009). Nonparametric identification and estimation of nonadditive h. Cambridge: NBER.
Chicago
Heckman James J, Nesheim Lars, Matzkin Roza L and National Bureau Of Economic Research. 2009. Nonparametric identification and estimation of nonadditive h. Cambridge: NBER.
Harvard
Heckman J. J., Nesheim Lars, Matzkin Roza L and National Bureau Of Economic Research. (2009). Nonparametric identification and estimation of nonadditive h. Cambridge: NBER.
MLA
Heckman James J, Nesheim Lars, Matzkin Roza L and National Bureau Of Economic Research. Nonparametric identification and estimation of nonadditive h. Cambridge: NBER. 2009.
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