Kociok was credited with 33 aerial victories on the Eastern Front, 21 of which were by night, claimed in 200 combat missions.[1] His shooting down three Polikarpov Po-2s of the famed 46th Guards Night Bomber Aviation Regiment, nicknamed the "Night Witches", (German: Nachthexen), on the night of 31 July 1943, resulted in the entire regiment being grounded for the first time. [2] For this feat, he was nicknamed Hexenjäger, or "Witch Hunter".
^ abcdeRakobolskaya, Irina; Kravtsova, Natalya (2005). Нас называли ночными ведьмами : так воевал женский 46-й гвардейский полк ночных бомбардировщиков. Moscow: University of Moscow Press. p. 336. ISBN5211050088. OCLC68044852.
Fellgiebel, Walther-Peer (2000) [1986]. Die Träger des Ritterkreuzes des Eisernen Kreuzes 1939–1945 — Die Inhaber der höchsten Auszeichnung des Zweiten Weltkrieges aller Wehrmachtteile [The Bearers of the Knight's Cross of the Iron Cross 1939–1945 — The Owners of the Highest Award of the Second World War of all Wehrmacht Branches] (in German). Friedberg, Germany: Podzun-Pallas. ISBN978-3-7909-0284-6.
Foreman, John; Mathews, Johannes; Parry, Simon (2004). Luftwaffe Night Fighter Claims 1939–1945. Walton on Thames: Red Kite. ISBN978-0-9538061-4-0.
Obermaier, Ernst (1989). Die Ritterkreuzträger der Luftwaffe Jagdflieger 1939 – 1945 [The Knight's Cross Bearers of the Luftwaffe Fighter Force 1939 – 1945] (in German). Mainz, Germany: Verlag Dieter Hoffmann. ISBN978-3-87341-065-7.
Patzwall, Klaus D.; Scherzer, Veit (2001). Das Deutsche Kreuz 1941 – 1945 Geschichte und Inhaber Band II [The German Cross 1941 – 1945 History and Recipients Volume 2] (in German). Norderstedt, Germany: Verlag Klaus D. Patzwall. ISBN978-3-931533-45-8.
Patzwall, Klaus D. (2008). Der Ehrenpokal für besondere Leistung im Luftkrieg [The Honor Goblet for Outstanding Achievement in the Air War] (in German). Norderstedt, Germany: Verlag Klaus D. Patzwall. ISBN978-3-931533-08-3.
Scherzer, Veit (2007). Die Ritterkreuzträger 1939–1945 Die Inhaber des Ritterkreuzes des Eisernen Kreuzes 1939 von Heer, Luftwaffe, Kriegsmarine, Waffen-SS, Volkssturm sowie mit Deutschland verbündeter Streitkräfte nach den Unterlagen des Bundesarchives [The Knight's Cross Bearers 1939–1945 The Holders of the Knight's Cross of the Iron Cross 1939 by Army, Air Force, Navy, Waffen-SS, Volkssturm and Allied Forces with Germany According to the Documents of the Federal Archives] (in German). Jena, Germany: Scherzers Militaer-Verlag. ISBN978-3-938845-17-2.