1. Bernheimer and Seitelberger,1968
2. Volk et al. (1969), Klibansky et al. (1970), Schneck et al. (1970)
3. Suzuki and Suzuki;Suzuki;Menkes et al; Okada, Veath, and O'Brien,1970
4. Buxton et al. (1972)
5. At necropsy the brain was superficially normal apart from the biopsy site. Biochemical studies on this patient have been reported,1970