Nilsson, A. (1969). „The presence of spingomyelin- and ceramide-cleaving enzymes in the small intestinal tract”. Biochim. Biophys. Acta176: 339-347. PMID5775951.
Yavin, E. and Gatt, S. (1969). „Enzymatic hydrolysis of sphingolipids. 8. Further purification and properties of rat brain ceramidase”. Biochemistry8: 1692-1698. PMID5805303.
