Hilz H, Wiegers U, Adamietz P (1975). “Stimulation of proteinase K action by denaturing agents: application to the isolation of nucleic acids and the degradation of 'masked' proteins”. Eur. J. Biochem.56 (1): 103–8. doi:10.1111/j.1432-1033.1975.tb02211.x. PMID1236799.
Hilz H, Wiegers U, Adamietz P (1975). “Stimulation of proteinase K action by denaturing agents: application to the isolation of nucleic acids and the degradation of 'masked' proteins”. Eur. J. Biochem.56 (1): 103–8. doi:10.1111/j.1432-1033.1975.tb02211.x. PMID1236799.