Sheean, Geoffrey; McGuire, John R. (2009). “Spastic Hypertonia and Movement Disorders: Pathophysiology, Clinical Presentation, and Quantification”. PM&R. 1 (9): 827–33. doi:10.1016/j.pmrj.2009.08.002. PMID19769916.
Bakheit, AM; Fheodoroff, K; Molteni, F (2011). “Spasticity or reversible muscle hypertonia?”. Journal of Rehabilitation Medicine. 43 (6): 556–7. doi:10.2340/16501977-0817. PMID21491075.
Sanger, T. D.; Chen, D.; Delgado, M. R.; Gaebler-Spira, D.; Hallett, M.; Mink, J. W. (2006). “Definition and Classification of Negative Motor Signs in Childhood”. Pediatrics. 118 (5): 2159–67. doi:10.1542/peds.2005-3016. PMID17079590.
Sheean, Geoffrey; McGuire, John R. (2009). “Spastic Hypertonia and Movement Disorders: Pathophysiology, Clinical Presentation, and Quantification”. PM&R. 1 (9): 827–33. doi:10.1016/j.pmrj.2009.08.002. PMID19769916.
Bakheit, AM; Fheodoroff, K; Molteni, F (2011). “Spasticity or reversible muscle hypertonia?”. Journal of Rehabilitation Medicine. 43 (6): 556–7. doi:10.2340/16501977-0817. PMID21491075.
Sanger, T. D.; Chen, D.; Delgado, M. R.; Gaebler-Spira, D.; Hallett, M.; Mink, J. W. (2006). “Definition and Classification of Negative Motor Signs in Childhood”. Pediatrics. 118 (5): 2159–67. doi:10.1542/peds.2005-3016. PMID17079590.