1. Interneurons and rigidity of spinal origin;Gelfan, S.; Tarlov, I.M.;J Physiol (Lond),1959
2. Muscle spasm and abnormal postures resulting from damage to interneurons in spinal cord;Penry, J.K.; Hoefnagel, D.; van den, Noort S.; Denny-Brown, D.;Arch Neurol (Chicago)
3. Intense rigidity of the arms due to isolation of motoneurons by a spinal tumour;J Neurol Neurosurg Psychiatry
4. Continuous muscle spasm in intramedullary tumours of the neuraxis;O'Connor, P.J.; Wynn Parry, C.B.; Davies, R.;J Neurol Neurosurg Psychiatry,1966
5. Rigidity in man due to spinal interneuron loss;Tarlov, I.M.;Arch Neurol,1967