Evidence for a periaqueductal gray-nucleus retroambiguus-spinal cord pathway in the rat.
Holstege, G, L Kerstens, M C Moes, and V G Vanderhorst. 1997. “Evidence for a Periaqueductal Gray-Nucleus Retroambiguus-Spinal Cord Pathway in the Rat.”. Neuroscience 80 (2): 587-98.