@online{olson,
  author = {Olson, Dieter},
  title = {Theory {Series,} {Part} 1: {Control-Affine} {Foundations}},
  date = {},
  url = {https://affinedrift.com/articles/theory-part1.html},
  langid = {en},
  abstract = {This article introduces the mathematical foundations of
    AffineDrift, formulating golf swing biomechanics within a
    control-affine framework. By decomposing system dynamics into an
    autonomous drift field and linear control inputs, it establishes a
    formal basis for motor control attribution and sensitivity
    analysis.}
}