A derivation of the Hessian of the (concentrated) likelihood function of the factor model employing the Schur product

Testing the interpretation of indices in a macroeconomic index model

Watson, Mark W., (1982)

Nonlinear three stage least squares pooling of cross dection and average time series data

Jorgenson, Dale W., (1982)

The asymptotic power of Cox's test of separate parametric families

Pesaran, Hashem, (1982)