Araraki L S L, V Ntziachristos, B Chance, J S Leigh, and J C Schotland (2000), "Optical diffusion tomography of the exercising human forearm" OSA Biomedical Topical Meetings, Miami 374-377. Arridge S R (1995), "Photon measurement density functions. Part I: Analytical forms" Applied Optics 34 7395-7409. Arridge S R (1999), "Optical Tomography in Medical Imaging" Inverse Problems 15 R41-R93. Arridge S R, M Cope, and D T Delpy (1992), "The theoretical basis for the determination of optical pathlengths in tissue: temporal and frequency analysis" Phys. Med. Biol. 37 1531-1559.