“Development of a Bioassay to Quantify the Ricin Toxin Content of Castor Bean (Ricinus Communis L.) Seeds - Doi: 10.4025 actasciagron.V34i4.11284”. 2011. Acta Scientiarum. Agronomy 34 (4): 397-402. https://doi.org/10.4025/actasciagron.v34i4.11284.