Higher order interelement continuity - e.g. Hermite or Spline interpolation in Fenics

Brief question: are there any references out there on interpolation bases in Fenics that enforce continuity on the first derivative (like e.g. 3rd order Hermite interpolation)? If it does not exist, does anyone have any experience in constructing such a basis using Lagrange elements in Fenics (and would not mind sharing the details)?

Happy 2022!

See, for example, @kamensky’s tIGAr.

Thanks Nate. I’ll take a look!