1. H. STILLMARK, Ueber Ricin, ein giftiges ferment, aus den Samen Von Ricinus Comm. L. und einigen anderen Euphorbiaceen. Thesis, Univ. Dorpat, Dorpat, 1988.
2. W. C. Boyd, In:Proteins, H. NEURATH, K. BAILEY (Eds), Academic Press N. Y., Vol. 2, 1954, p. 756.
3. N. SHARON, H. LIS, Lectins: Cell agglutinating and sugar specific proteins,Science, 177 (1972) 949.
4. I. J. GOLDSTEIN, R. C. HUGHES, M. MONSIGNY, T. OSAWA, N. SHARON, What should be called lectin?Nature, Lond, 285 (1980) 66.
5. International Dictionary of Medicine and Biology, John Wiley and Sons, N. Y., Vol. 2, 1986, p. 1555.