David Seus, Koondanibha Mitra, Iuliu Sorin Pop, Florin Adrian Radu, and Christian Rohde. A linear domain decomposition method for partially saturated flow in porous media. Comp. Methods Appl. Mech. Eng., (333):331--355, 2018. [PUMA: from:mhartmann decomposition Domain vorlaeufig ians] URL