@misc{ClaassenFeilBardinsetal., author = {Claassen, Jens and Feil, Katharina and Bardins, Stanislav and Teufel, Julian and Spiegel, Rainer and Kalla, Roger and Schneider, Erich}, title = {Dalfampridine in patients with downbeat nystagmus-an observational study}, series = {Journal of Neurology}, volume = {260}, journal = {Journal of Neurology}, number = {8}, issn = {0340-5354}, doi = {10.1007/s00415-013-6911-5}, pages = {1992 -- 1996}, language = {en} } @misc{FeilClaassenBrandinsetal., author = {Feil, Katharina and Claassen, Jens and Brandins, Stanislavs and Teufel, Julian and Krafczyk, Siegbert and Schneider, Erich}, title = {Effect of chlorzoxazone in patients with downbeat nystagmus: a pilot trial}, series = {Neurology}, volume = {81}, journal = {Neurology}, number = {13}, issn = {0028-3878}, doi = {10.1212/WNL.0b013e3182a55f6d}, pages = {1152 -- 1158}, language = {en} }