Persico, D.; Billia, E.M.; Ravara, S.; Sala, B. 2014. The skull of Stephanorhinus kirchbergensis (Jäger, 1839) (Mammalia, Rhinocerotidae) from Spinadesco (Cremona, Lombardia, Northern Italy): morphological analyses and taxonomical remarks – An opportunity for revising the three other skulls from the Po Valley.
Quaternary Science Reviews 109: 28-37, 3 figs, 1 tab, 2 pls.