TOKI Kunihiko. Development of Friendship in a Youth with Autism Spectrum Disorder. Japanese journal for the problems of the handicapped. 2014. 42. 2. 39-44
TOKI Kunihiko. Development of "self" in the Youth with Developmental Disorder : From Some Cases of the Friendship. Bulletin of the Faculty of Regional Studies, Gifu University. 2014. 34. 151-165
TOKI Kunihiko. Developmental Phases of Young/Adult Persons with Disabilities and Childhood Education. Japanese journal for the problems of the handicapped. 2011. 39. 2. 34-41