Veliki sŭbitii︠a︡ i lichnosti ot bŭlgarskata istorii︠a︡Nikolaĭ Boshev, Svetlin Rusev · First published 2007Open the Tome
Kirilskata azbuka--novata azbuka v Evropeískii︠a︡ sŭi︠u︡zSvetlin Rusev, Kiril Gogov · First published 2006Open the Tome
Nikolaĭ ShmirgelaNikolaĭ Shmirgela, Atanas A. Stoĭkov, Svetlin Rusev · First published 1971Open the Tome
