C. J. Burckhardt, Richelieu vol. 2 (1947; English edition 1970); cited after Avner Ben-Zaken,
Cross-Cultural Scientific Exchanges in the Eastern Mediterranean, 1560–1660 (2010), p. 209. A contemporary Swiss song by Benedikt Gletting called it the union of "the dolphin and the crocodile". R. Schwarzenbach, Schweizerisches Archiv für Volksunde 74 (1978), p. 6
