Heinemann, H. ; Schenck, H. (Thesis advisor) ; Frohberg, M. G. (Thesis advisor)
URL: https://publications.rwth-aachen.de/record/813684/files/813684_kardex.pdf
Dymkou, S. M. (Author) ; Jank, G. (Thesis advisor)
URN: urn:nbn:de:hbz:82-opus-19841