J. Koudelka, The Black Triangle: The Foothills of the Ore Mountains, Prague: Vesmir, 1994, n.p.
R. Delpire, Chaos: Josef Koudelka, London: Phaidon, 1999, p. 72
Josef Koudelka: Nationality Doubtful, Chicago: AIC, 2014, pl. 135c, pp. 216-217, captioned ‘Lom Jan Šverma, the coal basin covers an area of 70 by 20 kilometres’