@online{olson2025,
  author = {Olson, Dieter},
  title = {The {Null} {Space} of the {Constraint} {Jacobian:}
    {Unconstrained} {Motion} in {Constrained} {Systems} {With}
    {Applications} to {Golf} {Swing} {Biomechanics}},
  date = {2025-11-28},
  url = {https://affinedrift.com/articles/null-space-constraint-jacobian.html},
  langid = {en}
}