Footnote:
Literaturverzeichnis: Seite 8-10
This work has also been supported by the Research Campus Modal Mathematical Optimization and Data Analysis Laboratories funded by the Federal Ministry of Education and Research (BMBF Grant 05M14ZAM), and partially supported by the BMWi project Realisierung von Beschleunigungsstrategien der anwendungsorientierten Mathematik und Informatik für optimierende Energiesystemmodelle - BEAM-ME (fund number 03ET4023D-E)