Chastny︠i︡a uchebny︠i︡a zavedenī︠i︡a v︠i︡edomstva Ministerstva narodnago prosv︠i︡eshchenī︠i︡a : sobranīe d︠i︡eĭstvu︠i︡ushchikh zakonopolozhenīĭ i raspor︠i︡azhenīĭ o chastnykh uchebnykh zavedenī︠i︡akh i o domashnem obuchenīi - Laurson, A. M. (Aleksandr Matveevich) (Russian history and culture, 1912)