STALBERG, E. Motor unit fibre density in the extensor digitorum communis muscle. Single fibre electromyographic study in normal subjects at different ages. J Neurol Neurosurg Psychiatry. 1975, 38, 874-880
TRONTELJ, JV. Jitter measurement by axonal microstimulation. Guidelines and technical notes. Electroencephalogr Clin Neurophysiol. 1992, 85, 30-37
STALBERG, E. Single Fibre Electromyography : Old Woking. 1979