title = {An automated neck flexibility tester},
  journal = {Biomedical Engineering, IEEE Transactions on},
  volume = {49},
  number = {4},
  year = {2002},
  month = apr,
  pages = {384-391},
  keywords = {Articular, automated neck flexibility tester, Automatic control, Automatic testing, Automation, biocontrol, biomechanics, biomedical equipment, bone, Cervical Vertebrae, control nonlinearities, control options, controllability, dynamic inversion, dynamic model, dynamic testing, equations of motion, Equipment Design, Humans, in vitro testing, Integral equations, inverse problems, Lagrangian formulation, Mathematics, Mechanical, model inversion, Neck, Neck Muscles, nonlinear control technique, observability, orthopaedics, patient diagnosis, PD control, Pi control, PID control, Proportional control, Range of Motion, repetitive dynamic loading, setpoint control, simplified first-order model, Simulink software package, spine mechanical properties, Stress, three-term control, tracking control},
  issn = {0018-9294},
  doi = {10.1109/10.991166},
  author = {Tack, David Joseph and Siegler, S. and Kam, Moshe}