TY - BOOK A1 - Jansen, Wolfgang T1 - A note on the determination of the type of communication areas T2 - Preprint NLD Y1 - 1996 UR - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/26062 VL - 33 PB - Univ. CY - Potsdam ER -