Authors: Peter Schweizer
DOI: http://scholar.google.com/scholar_url?url=https://opus4.kobv.de/opus4-fau/frontdoor/deliver/index/docId/13145/file/Peter_Schweizer_Dissertation.pdf&hl=en&sa=X&d=6998924469667222636&scisig=AAGBfm3gsvVvmq1IoG_SS1R4yeW6x-eexg&nossl=1&oi=scholaralrt&hist=gGrFCJUAAAAJ:17946293168114635442:AAGBfm0qQWZWp2IalLiFNtyMCBvOY5LTVw