The article “Mihajlo Mihajlov i smisao njegove političke borbe”  (Mihajlo Mihajlov and the meaning of his struggle) about the renowned dissident Mihajlo Mihajlov, was written immediately after Čolak’s departure into exile in Italy in 1966. It offers a review of Mihajlov's struggle for the democratization and liberalization of Yugoslavia. It was most likely not published.