Silhavy, and Boos. (1975) 1975. “The ‘hidden Ligand’ of the Galactose-Binding Protein”. Eur J Biochem 54 (1): 163-7. doi:10.1111/j.1432-1033.1975.tb04125.x.

Silhavy, Szmelcman, Boos, and Schwartz. (1975) 1975. “On the Significance of the Retention of Ligand by Protein”. Proc Natl Acad Sci U S A 72 (6): 2120-4. doi:10.1073/pnas.72.6.2120.