References
- Arunachalam Ravindran . 1970 . “ A computer routine for quadratic and linear programming problems ” . In Algorithm 431 CACM
- Bussell , W. T. 1979 . Spring cabbage production . New Zealand commerical grower , 34 ( 9 ) : 30 – 31 .
- Proll , L.G. 1973 . “ Remark on Algorithm 431 ” . In CACM 431 3 – 3 . —remark 2