Mahr, M. M. (Author) ; Willmes-von Hinckeldey, K. (Thesis advisor)
URN: urn:nbn:de:hbz:82-opus-32779
Iversen, W. (Author) ; Willmes-von Hinckeldey, K. (Thesis advisor)
URN: urn:nbn:de:hbz:82-opus-26547