Article Barthelmess, Klaus; Svanberg, Ingvar (2013)
A Watercolour of a Stranded Sperm Whale from the Late-Seventeenth-Century. Archives of Natural History (pp. 38-44). (/isis/citation/CBB001252592/) unapi

Article Barthelmess, K.; Svanberg, I. (2009)
Two Eighteenth-Century Strandings of Sperm Whales (Physeter macrocephalus) on the Swedish Coast. Archives of Natural History (p. 63). (/isis/citation/CBB000931230/) unapi

Article Barthelmess, Klaus; Svanberg, Ingvar (2006)
Linnaeus' Whale. A Wash Drawing of Bottlenose Whales (Hyperoodon ampullatus) at Hammarby, with Remarks on Other Early Depictions of the Species. Lychnos (pp. 303-317). (/isis/citation/CBB001220360/) unapi

Book Barthelemess, Klaus (1982)
Das Bild des Wals in fünf Jahrhunderten. Führer durch die Ausstellung ... Universitäts- und Stadtbibliothek Köln ... 1982. (/isis/citation/CBB000002019/) unapi