1. El Escorial World Federation of Neurology Criteria for the Diagnosis of Motor Neuron Disease. Journal of Neurological Sciences 1994; 124(Supp.): 96–107
2. Lucas, D. R., Newhouse, J. P. The toxic effect of sodium L-Glutamate on inner layers of retina. Arch. Ophthalmol. 1957; 193–204.
3. Asher, D. M., Vanahihara, R. T., Rogers, N. G. et al. Studies of the viruses of spongyform encephalopathies in cell cultures. In: Pruisner, S. B., Hadlow, W. J. (Eds.), Slow Transmissible diseases of the Nervous System, Vol. 2, New York, Academia, 1979; pp. 235–242.
4. Alter, M., Kurland, L.T, Molgaard, C. A. Late progressive muscular atrophy and antecedent poliomyelitis. In: Rowland, L. P (Ed.), Human Motor Neuron Diseases, New York, Raven, 1982; pp. 303–309.
5. Poskanzer, D. C., H. M. Cantor, H. M., Kaplan, G. S. The frequency of preceding poliomyelitis in amyotrophic lateral sclerosis. In: Norria, F. H, Kurland, L. T. (Eds.), Motor Neuron Disease, New York. 1969. Grune and Stratton, pp. 280–290.