@article{1194,
  author       = {Annunziata, Salvatore and Schneider, Axel},
  issn         = {1754-2103},
  journal      = {Applied Bionics and Biomechanics},
  number       = {3},
  pages        = {249--266},
  publisher    = {Hindawi Limited},
  title        = {{Physiologically Based Control Laws Featuring Antagonistic Muscle Co-Activation for Stable Compliant Joint Drives}},
  doi          = {10.1155/2012/503818},
  volume       = {9},
  year         = {2012},
}

@article{1197,
  author       = {Schmitz, Josef and Schneider, Axel and Schilling, Malte and Cruse, Holk},
  issn         = {1754-2103},
  journal      = {Applied Bionics and Biomechanics},
  number       = {3},
  pages        = {135--147},
  publisher    = {Taylor and Francis},
  title        = {{No need for a body model: Positive velocity feedback for the control of an 18-DOF robot walker}},
  doi          = {10.1080/11762320802221074},
  volume       = {5},
  year         = {2008},
}