Bŭlgarski pisateli za sebe si i za svoeto tvorchestvoBoris Delchev, Simeon Sultanov · First published 1970Open the Tome
Khristo Smirnenski, Nikola Vaptsarov v spomenite na sŭvremennitsiteBoris Delchev, Simeon Sultanov · First published 1966Open the Tome
Bŭlgarski pisateli za literaturata i literaturnii︠a︡ trudBoris Delchev · First published 1964Open the Tome
Pencho Slaveĭkov, P.K. I︠A︠vorov, P.I︠U︠. Todorov v spomenite na sv̋remennitsite siBoris Delchev · First published 1963Open the Tome
