Reversible Downbeat Nystagmus and Ataxia in Felbamate Intoxication
Neurol 45:845, Hwang,T.L.,et al, 1995
Downbeating Nystagmus and Other Ocular Motor Defects Caused by Lithium Toxicity
Neurol 39:481-487, Corbett,J.J.,et al, 1989
Forced Downward Ocular Deviation
Arch Neurol 35:456, Simon,R.P., 1978