Campbell, E. L., Hagen, K. D., Cohen, M. F., Summers, M. L., & Meeks, J. C. (1996). The devR gene product is characteristic of receivers of two-component regulatory systems and is essential for heterocyst development in the filamentous cyanobacterium Nostoc sp. strain ATCC 29133.

Campbell, E L., K D. Hagen, M F. Cohen, M L. Summers, e J C. Meeks. The DevR Gene Product Is Characteristic of Receivers of Two-component Regulatory Systems and Is Essential for Heterocyst Development in the Filamentous Cyanobacterium Nostoc Sp. Strain ATCC 29133. 1996.

Campbell, E L., et al. The DevR Gene Product Is Characteristic of Receivers of Two-component Regulatory Systems and Is Essential for Heterocyst Development in the Filamentous Cyanobacterium Nostoc Sp. Strain ATCC 29133. 1996.