Kusnetzow, A. K., Dukkipati, A., Babu, K. R., Ramos, L., Knox, B. E., & Birge, R. R. (2004). Vertebrate ultraviolet visual pigments: Protonation of the retinylidene Schiff base and a counterion switch during photoactivation. National Academy of Sciences.

Kusnetzow, Ana Karin, Abhiram Dukkipati, Kunnel R. Babu, Lavoisier Ramos, Barry E. Knox, a Robert R. Birge. Vertebrate Ultraviolet Visual Pigments: Protonation of the Retinylidene Schiff Base and a Counterion Switch During Photoactivation. National Academy of Sciences, 2004.

Kusnetzow, Ana Karin, et al. Vertebrate Ultraviolet Visual Pigments: Protonation of the Retinylidene Schiff Base and a Counterion Switch During Photoactivation. National Academy of Sciences, 2004.