Foundations of space-time finite element methods: polytopes, interpolation, and integration. - Cory V. Frontin; Gage S. Walters; Freddie D. Witherden; Carl W. Lee; David M. Williams; David L. Darmofal (CoRR, 2020)

Enabling four-dimensional conformal hybrid meshing with cubic pyramids. - Miroslav S. Petrov; Todor D. Todorov; Gage S. Walters; David M. Williams; Freddie D. Witherden (Numer. Algorithms, 2022)