Dependence of beta-galactoside-transacetylase activity on the temperature of growth in E. coli strains with polar mutations in the operator-proximal part of the beta-galactosidase gene
Biochem Biophys Res Commun. 1967 Dec 15;29(5):674-9.
doi: 10.1016/0006-291x(67)90269-0.