Obrig, H., Heekeren, H., Ruben, J., Wenzel, R., Ndayisaba, J. P., Dirnagl, U., & Villringer, A. (1996).
Continuous spectrum near-infrared spectroscopy approach in functional activation studies in the human adult.
Proceedings SPIE, 2926, 58-66. doi:10.1117/12.260820.