A coarse space for heterogeneous Helmholtz problems based on the Dirichlet-to-Neumann operator. - Lea Conen; Victorita Dolean; Rolf Krause; Frédéric Nataf (J. Comput. Appl. Math., 2014)

Addendum to "A coarse space for heterogeneous Helmholtz problems based on the Dirichlet-to-Neumann operator" [J. Comput. Appl. Math. (2014) 83-99]. - Lea Conen; Victorita Dolean; Rolf Krause; Frédéric Nataf (J. Comput. Appl. Math., 2015)