Two-Level Error Estimation for the Integral Fractional Laplacian. - Markus Faustmann; Ernst P. Stephan; David Wörgötter (Comput. Methods Appl. Math., 2023)

Regularity of vector fields with piecewise regular curl and divergence. - Jens Markus Melenk; David Wörgötter (CoRR, 2024)