@book { DasPlanetenNetz17AbgeschlosseneRaumblase, title = "Das Planeten-Netz 17 - Abgeschlossene Raumblase", author = "Wilfried A. {Hary}", year = "2020", publisher = "Uksak E-Books", address = "Lengerich, Germany", url = "https://uksakebooks.grin.com/document/593446" }