Halfautomatisch tankkanon, Duits model, 5-cm-KwK 39 L/42, kaliber 50 x 289 R op kazemataffuit Halfautomatisch tankkanon, Duits model, 5-cm-KwK 39 L/42, kaliber 50 x 289 R op kazemataffuit afv/weapons profile Illustrated summary of German self-propelled weapons 1939-1945 / by Peter Chamberlain and Hilary L. Doyle