S. Brun, M.Vilkova. "Heavenly Host. Image and Veneration". The Exhibition Catalogue of the Federal State Government-financed Cultural Institution «The Moscow Kremlin State Historical and Cultural Museum and Heritage Site «The Moscow Kremlin». Moscow. 2023 Morshakova E.A. The Old Russian plastic art. Pectoral crosses, icons and enkolpions of the 12-15th cc. Catalogue. M., 2013 Morshakova E.A. The Old Russian plastic art. Pectoral crosses, icons and enkolpions of the 12-15th cc. Catalogue. M., 2013