H. Antil, A. Gantner, R. Hoppe, D. K�ster, K. Siebert, and A. Wixforth. Domain Decomposition Methods in Science and Engineering XVII, volume 60 of Lecture Notes in Computational Science and Engineering, page 305-312. Springer, (2008)
M. Dihlmann, and B. Haasdonk. SimTech Preprint, University of Stuttgart (The final publication is available at Springer
via http://dx.doi.org/10.1007/s10589-014-9697-1), (2013)
C. Eck, M. Kutter, A. Sändig, and C. Rohde. ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift
für Angewandte Mathematik und Mechanik, 93 (10-11):
745--761(2013)