Sonnentag, S.S.SonnentagVolmer, JudithJudithVolmer0000-0003-4476-6537Spychala, A.A.Spychala2019-09-192014-09-2420089781412923859https://fis.uni-bamberg.de/handle/uniba/20024engbookparthttp://books.google.com/books?id=q5LTTMglfJ8C&printsec=frontcover&hl=de&source=gbs_ge_summary_r&cad=0#v=onepage&q=volmer&f=false