Zimmer, A., Zimmer, A. M., Hohmann, A. G., Herkenham, M., & Bonner, T. I. (1999). Increased mortality, hypoactivity, and hypoalgesia in cannabinoid CB1 receptor knockout mice. The National Academy of Sciences.

Zimmer, Andreas, Anne M. Zimmer, Andrea G. Hohmann, Miles Herkenham, and Tom I. Bonner. Increased Mortality, Hypoactivity, and Hypoalgesia in Cannabinoid CB1 Receptor Knockout Mice. The National Academy of Sciences, 1999.

Zimmer, Andreas, et al. Increased Mortality, Hypoactivity, and Hypoalgesia in Cannabinoid CB1 Receptor Knockout Mice. The National Academy of Sciences, 1999.