Verreth, C., Cammue, B., Swinnen, P., Crombez, D., Michielsen, A., Michiels, K., . . . Vanderleyden, J. (1989). Cloning and expression in Escherichia coli of the Azospirillum brasilense Sp7 gene encoding ampicillin resistance.

Verreth, C., B. Cammue, P. Swinnen, D. Crombez, A. Michielsen, K. Michiels, A. Van Gool, and J. Vanderleyden. Cloning and Expression in Escherichia Coli of the Azospirillum Brasilense Sp7 Gene Encoding Ampicillin Resistance. 1989.

Verreth, C., et al. Cloning and Expression in Escherichia Coli of the Azospirillum Brasilense Sp7 Gene Encoding Ampicillin Resistance. 1989.