@online{untitled,
  author = {},
  title = {In {Layman’s} {Terms:} {Contraction} {Theory} {Meets}
    {Tangent} {Spaces}},
  url = {https://affinedrift.com/articles/tangent-hyperplane-articles/Advanced/Contraction_Tangent_LAYMAN.html},
  langid = {en}
}