  In this article we introduce a general nonparametric point-identification
result for nonseparable triangular models with a multivariate first- and second
stage. Based on this we prove point-identification of Hedonic models with
multivariate heterogeneity and endogenous observable characteristics, extending
and complementing identification results from the literature which all require
exogeneity. As an additional application of our theoretical result, we show
that the BLP model (Berry et al. 1995) can also be identified without index
restrictions.
