Dreiseikelmann, Brigitte; Eichenlaub, Rudolf; Wackernagel, Wilfried (1979). "The effect of differential methylation by Escherichia coli of plasmid DNA and phage T7 and λ DNA on the cleavage by restriction endonuclease MboI from Moraxella bovis". Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis. 562 (3): 418–428. doi:10.1016/0005-2787(79)90105-9. PMID378259.
Dreiseikelmann, Brigitte; Eichenlaub, Rudolf; Wackernagel, Wilfried (1979). "The effect of differential methylation by Escherichia coli of plasmid DNA and phage T7 and λ DNA on the cleavage by restriction endonuclease MboI from Moraxella bovis". Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis. 562 (3): 418–428. doi:10.1016/0005-2787(79)90105-9. PMID378259.