M. Nakel

Penicillin-sensitive DD-carboxypeptidases from Streptomyces strains R39 and K11.

J. Frère, J. Ghuysen, H. Perkins, 1972, Biochemistry.

Wall peptidoglycan in Aerococcus viridans strains 201 Evans and ATCC 11563 and in Gaffkya homari strain ATCC 10400.

O. Kandler, J. Ghuysen, M. Nakel, 1971, Biochemistry.