1. Arendt, W.: Heat Kernels. Lecture Notes, 9th Internet Seminar 2005–2006
2. Arendt, W., Batty, C.J., Hieber, M., Neubrander, F.: Vector-Valued Laplace Transforms and Cauchy Problems, Volume 96 of Monographs in Mathematics, 2nd edn. Birkhäuser (2011)
3. Arendt, W., Chill, R., Seifert, C., Vogt, H., Voigt, J.: Form Methods for Evolution Equations, and Applications. Lecture Notes, 18th Internet Seminar 2014–2015
4. Arendt, W., Mazzeo, R.: Spectral properties of the Dirichlet-to-Neumann operator on Lipschitz domains. Ulmer Semin. 12, 23–37 (2007)
5. Arendt, W., Mazzeo, R.: Friedlanders eigenvalue inequalities and the Dirichlet-to-Neumann semigroup. Commun. Pure Appl. Anal. 11(6), 2201–2212 (2012)