The paper considers the estimation of a fixed effects time series-cross section model where errors have both unspecified interpersonal and intertemporal covariance. Efficient estimators in the form of GLS are suggested, which can be implemented on the data in their actual form or in deviations...

Short-term financial decisions of companies are modeled with data from the published accounts of a sample of U.K. companies. The total short-term financing requirement is modeled as a buffer, absorbing deficits and surpluses elsewhere in the company's accounts. The focus is on the allocation of...

A fixed effects panel model with randomly missing data is considered. The incomplete data are characterized as a set of blocks of complete data. A covariance (CV) estimator for the incomplete data is developed. It is a linear combination of the CB estimators of each of the complete blocks, with...