Kowalski, Kazimierz  1925-2007 <br/><br/>
Fossil Zapodidae (Rodentia, Mammalia) from the Pliocene and Quaternary of Poland / 

 -- Kraków :   Polska Akademia Nauk,   1979 
 - pp. 199-212, [2] p. de lam. 
<br/><br/> Separata de : Acta Zoologica Cracoviensia XXIII.