References
- Blau , Peter and Duncan , Otis D. 1967 . The American Occupational Structure , New York : Wiley .
- Glass , D. V. , ed. 1954 . Social Mobility in Britain , London : Routledge and Kegan Paul .
- Berent , Jerzy . 1952 . Fertility and Social Mobility . Population Studies , 5 : 244 – 260 .
- Hillier , Frederick and Lieberman , Gerald . 1968 . Introduction to Operations Research , San Francisco : Holden-Day .
- Sperry Univac Corporation . 1975 . Functional Mathematical Programming System (FMPS), UP-8198 , Sperry Univac .
- International Mathematical and Statistical Libraries . 1976 . IMSL Reference Manual , Houston, Texas : IMSL .
- Harwell . 1973 . Harwell Subroutine Library, Report AERE-R 7477 , Edited by: Hopper , M. J. Harwell, Berkshire : H.M. Stationery Office . Compiled by