Hi, 

I would like to use the spectral (hp) tetrahedral elements proposed in the paper below:

"A NEW TRIANGULAR AND TETRAHEDRAL BASIS FOR HIGH-ORDER (hp) FINITE ELEMENT METHODS, SPENCER J. SHERWIN AND GEORGE EM KARNIADAKIS, INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, VOL. 38, 3775-3802 (1995)

I believe that I most probably saw in the UFL documentation that this element formulation was already implemented. However, I am not able to track that documentation down now. Can you kindly help me with how I may implement this element in Firedrake?

Thanks