Erik Buchmann Patrick Erik Bradley Klemens Böhm Deriving Bounds on the Size of Spatial Areas 1-16 2015 Open Journal of Databases (OJDB) 2 1 https://www.ronpub.com/ojdb/OJDB-2015v2i1n01_Buchmann.html http://nbn-resolving.de/urn:nbn:de:101:1-201705194566 urn:nbn:de:101:1-201705194566 RonPub UG (haftungsbeschränkt)