[general editors Alexander Fol, Atanas Stamatov ; author Dimiter Stoimenov]Centre for Research on the Bulgarians, Archives State Agency : Tangra TanNakRa Pub. House2008
Vorwort von D. Rizoff = preface by D. Rizoff = préface de D. Rizoff = предговоръ отъ Д. РизовъKönigliche Hoflithographie, Hof-Buch- und -Steindruckerei Wilhelm Greve1917