“Ambulation by traumatic T4-12 paraplegics using functional neuromuscular stimulation”, Authors : Daniel Graupe, Ross Davies, Hubert Kodylewski, Kate H. Kohn, Critical Review Neurosurgery (1998) 8: 221-231, Springer-Verlag 1998. 

“Functional neuromuscular stimulator for short-distance ambulation by certain thoracic-level spinal-cord-injured paraplegics”, Authors : Daniel Graupe, PhD and Kate H. Kohn, MD, Surgical Neurology 1998; 50: 202-207. 

“Transcutaneous functional neuromuscular stimulation of certain traumatic complete thoracic paraplegics for independent short-distance ambulation”, Authors : Daniel Graupe and Kate H. Kohn, Neurological Research, 1997, Volume 19, June, Pgs. 323-333. 

“Functional Neuromuscular Stimulation for Mobility in People with Spinal Cord Injuries. The Parastep I System”, Author : Edward Chaplin, MD, The Journal of Spinal Cord Medicine, 1995, Volume 19, Number 2, Pgs. 99-105. 

“Physiologic costs of reciprocal gait in FES assisted walking”, Authors : P. Winchester, PhD PT, J.J. Carrollo, MS PE, R. Habasevich, MS PT, Paraplegia 32 (1994) Pgs. 680-686, 1994 International Society of Paraplegia. 

“Evaluation of a Training Program for Persons with SCI Paraplegia Using the Parastep I Ambulation System: Part 1. Ambulation Performance and Anthropometric Measures”, Authors : K. John Close, PhD, Patrick L. Jacobs, PhD, James G. Broton, PhD, Rosalind S. Guest, BPT, Belinda M. Needham-Shropshire, MS PT OTR, Nathan Lebwohl, MD, Mark S. Nash, PhD, Barth A. Green, MD, Archives Physical Medicine Rehabilitation, Volume 78, August 1997, Pgs. 789-793. 

“Evaluation of a Training Program for Persons with SCI Paraplegia Using the Parastep I Ambulation System: Part 2. Effects on Physiological Responses to Peak Arm Ergometry”, Authors : Patrick L. Jacobs, PhD, Mark S. Nash, PhD, K. John Close, PhD, Rosalind S. Guest, BPT, Belinda M. Needham-Shropshire, MS PT OTR, Nathan Lebwohl, MD, Mark S. Nash, PhD, Barth A. Green, MD, Archives Physical Medicine Rehabilitation, Volume 78, August 1997, Pgs. 794-798. 

“Evaluation of a Training Program for Persons with SCI Paraplegia Using the Parastep I Ambulation System: Part 3. Lack of Effect on Bone Mineral Density”, Authors : Belinda M. Needham-Shropshire, MS PT OTR, James G. Broton, PhD, K. John Close, PhD, Nathan Lebwohl, MD, Rosalind S. Guest, BPT, Patrick L. Jacobs, PhD, Archives Physical Medicine Rehabilitation, Volume 78, August 1997, Pgs. 799-803. 

“Evaluation of a Training Program for Persons with SCI Paraplegia Using the Parastep I Ambulation System: Part 4. Effect on Physical Self-Concept and Depression”, Authors : Rosalind S. Guest, BPT, K. John Close, PhD, Belinda M. Needham-Shropshire, MS PT OTR, Patrick L. Jacobs, PhD, Archives Physical Medicine Rehabilitation, Volume 78, August 1997, Pgs. 804-807. 

“Evaluation of a Training Program for Persons with SCI Paraplegia Using the Parastep I Ambulation System: Part 5. Lower Extremity Blood Flow and Hyperemic Responses to Occlusion Are Augmented by Ambulation Training”, Authors : Mark S. Nash, PhD, Patrick L. Jacobs, PhD, Berta M. Montalvo, MD, K. John Close, PhD, Rosalind S. Guest, BPT, Belinda M. Needham-Shropshire, MS PT OTR, Archives Physical Medicine Rehabilitation, Volume 78, August 1997, Pgs. 808-814. 

“Spinal Cord Injury - Clinical Outcomes from the Model Systems”, Samuel L. Stover, MD, Joel A. DeLisa, MD MS, Gale G. Whiteneck, PhD, Aspen Publishers, Inc., Gaithersburg, Maryland, 1995 (355 Pages). 

“Functional Electrical Stimulation for Ambulation by Paraplegics - Twelve Years of Clinical Observations and System Studies”, Daniel Graupe, PhD and Kate H. Kohn, MD, Krieger Publishing Company, Malabar, Florida, 1994 (194 Pages). 

Rehabilitation Institute of Chicago - Procedure Manual “Spinal Cord Injury - Medical Management and Rehabilitation”, Numerous Contributors - Edited by Gary M. Yarkony, MD, Aspen Publishers, Inc., Gaithersburg, Maryland, 1994, (236 Pages). 

Rancho Los Amigos Medical Center - “Neuromuscular Electrical Stimulation - A Practical Guide”, 3rd Edition, Lucinda L. Baker, PT PhD, Donald R. McNeal, PhD, Laurel A. Benton, PT, Bruce R. Bowman, ScD, Robert L. Walters, MD, 1993 (227 Pages). 

“Exercise in Modern Medicine”, Barry A. Franklin, PhD, Seymour Gordon, PhD, Gerald C. Timmis, MD, Williams & Wilkins, Baltimore, 1989 (300 Pages). 

“Functional Electrical Stimulation : Standing and Walking after Spinal Cord Injury”, Alojz Kralj, DSc, Tadej Bajd, DSc, CRC Press, Inc., Boca Raton, Florida, 1989 (198 Pages). 

“Rehabilitation Medicine - Principles and Practice”, Edited by Joel A. DeLisa, MD MS, J.B. Lippincott Company, Philadelphia, 1988 (903 Pages). 

“Spinal Cord Injury - A Guide for Patient and Family”, Lynn Phillips, Mark N. Ozer, MD, Peter Axelson, MS ME, Howard Chizeck, PhD, Raven Press, New York, 1987 (303 Pages).