* Gołąb, Maciej, "Creativity of Józef Koffler – Problems with style organization" (Das Schaff des Józef Kofflers) – Probleme einer Stilgestaltung.
* Gołąb, Maciej, «Creativity of Józef Koffler — Problems with style organization» (Das Schaff des Józef Kofflers) — Probleme einer Stilgestaltung.