Reference
Hans de Bruijn, Anneke A. Bosma (2012): Spermophilinus and Csakvaromys, two names for the same genus
of ground squirrel (Tamiini, Sciuridae, Rodentia, Mammalia) from the Neogene of Europe, – Annalen des Naturhistorischen Museums in Wien – 114A: 317 - 320.