Usacheva Olga T. «The Russian Orthodox Church as a member of the World Council of Churches: strengthening the Orthodox position on issues of diakonia» // Tomsk State University Journal 2014. №389 C.86-91
Usacheva Olga T. «The history of the Russian Orthodox Church's participation in diakonia of the World Council of Churches» // Tomsk State University Journal of History 2014. №6 (44) C.102-109
