We study the identification of panel models with linear individual-specific coefficients when T is fixed. We show identification of the variance of the effects under conditional uncorrelatedness.
In this paper,we construct a nonparametric estimator of the distributions of latent factors in linear independent multi-factor models under the assumption that factor loadings are known.
The authors study linear factor models under the assumptions that factors are mutually independent and independent of errors, and errors can be correlated to some extent.