Oculogyric CrisisIn Ocular Differential Diagnosis, Lea & Febiger, Phila. 1975 p. 133, Roy,F.H., 1975
Acquired Pendular Nystagmus with Oscillopsia in Multiple Sclerosis:A Sign of Cerebellar Nuclei DiseaseJNNP 37:570, Aschoff,J.C.,et al, 1974