R. J. D. Haan

Unilateral pallidotomy in Parkinson's disease: a randomised, single-blind, multicentre trial

B. Schmand, R. Haaxma, J. Speelman, 1999, The Lancet.

GPi vs STN deep brain stimulation for Parkinson disease

R. D. de Haan, M. Figee, B. Schmand, 2016, Neurology.

Predictors of cognitive and psychosocial outcome after STN DBS in Parkinson's Disease

W. Linssen, J. Raaphorst, Ben Schmand, 2010 .

Outcome of unilateral pallidotomy in advanced Parkinson's disease: cohort study of 32 patients

Ben Schmand, J. D. Speelman, R. J. D. Haan, 2001, Journal of neurology, neurosurgery, and psychiatry.

Unilateral pallidotomy versus bilateral subthalamic nucleus stimulation in Parkinson’s disease: one year follow-up of a randomised observer-blind multi centre trial

R. Esselink, J. Speelman, R. D. de Bie, 2006, Acta Neurochirurgica.