Tammer, R., Ehrenreich, L., Boretius, S., Watanabe, T., Frahm, J., & Michaelis, T. (2006). Compatibility of glass-guided recording microelectrodes in the brain stem of squirrel monkeys with high-resolution 3D MRI. Journal of Neuroscience Methods, 153(2), 221-229. Retrieved from http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6T04-4HTCTB3-1-K&_cdi=4852&_user=38661&_orig=browse&_coverDate=06%2F15%2F2006&_sk=998469997&view=c&wchp=dGLzVlz-zSkzV&md5=cc9cd447e965d9108940895a046e7e82&ie=/sdarticle.pdf.