Folkmanis, A., Takeda, Y., Simuth, J., Gussin, G., & Echols, H. (1976). Purification and properties of a DNA-binding protein with characteristics expected for the Cro protein of bacteriophage lambda, a repressor essential for lytic growth. Proc Natl Acad Sci U S A.

Folkmanis, A., Y. Takeda, J. Simuth, G. Gussin, e H. Echols. "Purification and Properties of a DNA-binding Protein With Characteristics Expected for the Cro Protein of Bacteriophage Lambda, a Repressor Essential for Lytic Growth." Proc Natl Acad Sci U S A 1976.

Folkmanis, A., et al. "Purification and Properties of a DNA-binding Protein With Characteristics Expected for the Cro Protein of Bacteriophage Lambda, a Repressor Essential for Lytic Growth." Proc Natl Acad Sci U S A 1976.