Cerebellar Hypoplasia: Information sheet compiled by the National Institute of Neurological Disorders and Stroke (NINDS).NIH: Ataxias and Cerebellar/Spinocerebellar Degeneration: Information sheet compiled by the National Institute of Neurological Disorders and Stroke (NINDS).Paraneoplastic Cerebellar Degeneration: An article written by Timothy C. Hain, MD.The Merck Manual: Disorders Of Movement: Information about cerebellar and spinocerebellar disorders. Includes a short discussion about friedreich's ataxia, cerebellar ataxias and multiple systems atrophy.