AGGK - Kawai,M.; Iwata,M.; Takatsu,M.; Toyokura,Y.; Nagashima,K. - [When does the brain atrophy in Creutzfeldt-Jakob disease? (author's transl)] - Rinsho Shinkeigaku. Clinical Neurology 1981 Aug; 21(8): 691-7
ALSP - Toyokura,Y. - [New problems on viral diseases of the nervous system] - Nippon Ishikai Zasshi. The Journal of the Japan Medical Association 1969 Sep 1; 62(5): 448-51