Keck, W., Glauner, B., Schwarz, U., Broome-Smith, J. K., & Spratt, B. G. (1985). Sequences of the active-site peptides of three of the high-Mr penicillin-binding proteins of Escherichia coli K-12.

Keck, W., B. Glauner, U. Schwarz, J K. Broome-Smith, and B G. Spratt. Sequences of the Active-site Peptides of Three of the High-Mr Penicillin-binding Proteins of Escherichia Coli K-12. 1985.

Keck, W., et al. Sequences of the Active-site Peptides of Three of the High-Mr Penicillin-binding Proteins of Escherichia Coli K-12. 1985.