1. Returns to scale in business administration;Beckman;Quart. J. Econ.,1960
2. Klassen, Einkommensverteilung und die Struktur bürokratischer Organisationen;Beckmann;Kyklos,1971
3. A. Kautilya, Mysore, 1960 (reprint).
4. The Structure of Earnings;Lydall,1968
5. Administrative Behavior; A Study of Decision-Making Processes in Administrative Organization;Simon,1965