Kohl, M., Obrig, H., Steinbrink, J., Malak, J., Wabnitz, H., Rinneberg, H., et al. (2000). Optical bed-side assessment of cerebral perfusion a near-infrared-spectroscopy study. NeuroImage, 11(5, Suppl.), S784-S784. doi:10.1016/S1053-8119(00)91713-0.