1. Baldwin, B.S., 2002. Preliminary evaluation of castor (Ricinus communis) and castor germplasm as an oilseed crop for Mississippi. Annual Report: Alternative Crops and Value Added Products, 3 pp.
2. Registration of castor variety Dawn;Brigham;Crop Sci.,1970
3. Registration of castor variety Hale;Brigham;Crop Sci.,1970
4. Registration of castor variety Lynn;Brigham;Crop Sci.,1970
5. Castor: return of an old crop;Brigham,1993