Pirling P. New material on the life and activities of Jacob Reitenfels. In Russian (ask us if in doubt)/Pirling P. Novye materialy o zhizni i deyatelnosti Yakova Reytenfelsa. The texts of the documents were translated by Alexey Stankevich: Printing House of the Staff of the Moscow Military District, 1906. 24, 1c. SKUalb497ee51fef25685a.