Krishna B. Athreya, On the Absolute Continuity of the Limit Random Variable in the Supercritical Galton-Watson Branching Process, Proceedings of the American Mathematical Society, Vol. 30, No. 3 (Nov.

Non-discretionary or environmental variables are regarded as important in the evaluation of efficiency in Data Envelopment Analysis (DEA), but there is no consensus on the correct treatment of these ...