Ernst, A., Black, T., Cai, Y., Panoff, J. M., Tiwari, D. N., & Wolk, C. P. (1992). Synthesis of nitrogenase in mutants of the cyanobacterium Anabaena sp. strain PCC 7120 affected in heterocyst development or metabolism.

Ernst, A., T. Black, Y. Cai, J M. Panoff, D N. Tiwari, and C P. Wolk. Synthesis of Nitrogenase in Mutants of the Cyanobacterium Anabaena Sp. Strain PCC 7120 Affected in Heterocyst Development or Metabolism. 1992.

Ernst, A., et al. Synthesis of Nitrogenase in Mutants of the Cyanobacterium Anabaena Sp. Strain PCC 7120 Affected in Heterocyst Development or Metabolism. 1992.