Frans mortier, systeem Stokes-Brandt, model 1937, kaliber 50 mm - Lance-grenades de 50 mm Modèle 37 - 5 cm Granatwerfer 203(f) afv/weapons profile Illustrated summary of German self-propelled weapons 1939-1945 / by Peter Chamberlain and Hilary L. Doyle German Army in Pictures - Engeland Voorschrift MI 14