Hammond, Rolt (1968). "Development of electric traction". Modern Methods of Railway Operation. London: Frederick Muller. pp. 71–73. OCLC467723.
Ransome-Wallis, Patrick (1959). "Electric motive power". Illustrated Encyclopedia of World Railway Locomotives. London: Hutchinson. p. 173. ISBN0-486-41247-4. OCLC2683266.
Krzysztof, Zintel (January 2005). "Wąskotorowe lokomotywy elektryczne na tor 900 mm w kopalniach węgla brunatnego". Świat Kolei (in Polish): 14–21. ISSN1234-5962.