A. Peskin

Cloning nitrogen fixing genes from Klebsiella pneumoniae in vitro and the isolation of NIF promoter mutants affecting glutamine synthetase regulation.

F. Ausubel, R. Margolskee, G. Riedel, 1977, Basic life sciences.

Glutamine synthetase mutations which affect expression of nitrogen fixation genes in Klebsiella pneumoniae

F. Ausubel, R. Margolskee, S. C. Bird, 1979, Journal of bacteriology.

THE NITROGEN FIXATION (nif) OPERON OF Klebsiella pneumoniae: CLONING nif GENES AND THE ISOLATION OF nif CONTROL MUTANTS

F. Ausubel, R. Margolskee, G. Riedel, 1977 .