BRECKNER, K. A. A Comparative Study of "Godmanhood" (bogochelovechestvo) in Russian Philosophy. The Eighth Day in V. Solovëv, S. Bulgakov, N. Berdiaev, and S. Frank. Rocznik Filozoficzny Ignatianum, v. 19, n. 1, p. 116-152, 30 cze. 2013.