@book { StraeinsAll33EinRaumschiffnamensExcalibur, title = "Straße ins All 33: Ein Raumschiff namens Excalibur", author = "Wilfried A. {Hary} and Werner K. {Giesa}", year = "2021", publisher = "Uksak E-Books", address = "Lengerich, Germany", url = "https://uksakebooks.grin.com/document/1003451" }