Sulyak Sergey G. «I.P. Filevich and Carpathian Rus. Part 2. Carpathian Rus in I.P. Filevich’s scholarly heritage» // Rusin 2021. №63 C.81-137
Sulyak Sergey G. «Evfimy Kryzhanovsky on the Rusins-Uniates of the Russian Zabuzhie» // Rusin 2022. №70 C.104-147
