"Accident description (19481020-0)". aviation-safety.net. Aviation Safety Network. Retrieved November 18, 2014. Reliable contemporary British reports, e.g. The Times newspaper (October 1948) and the Court of Investigation report (November 1949), cite the accident as occurring early on October 21.
Némeček 1989, p. 470. Némeček, Václav (1989). "Monografie: Lazerov Laz-7: Část I". Letectví a Komonautika (in Czech). Vol. LXV, no. 12. pp. 470–472. ISSN0024-1156.
Carbonel 2022, p. 86. Carbonel, Jean-Christophe (October 2022). "Database: Hurel-Dubois Aircraft". Aeroplane. Vol. 50, no. 10. pp. 83–99. ISSN0143-7240.