Particularly important is his correspondence with the Bohemian philologist Josef Dobrovský, his spiritual father, and later with the Serbian philologist Vuk Karadžić.
Veçanërisht e rëndësishme është korrespondenca e tij me filologun Bohem Jozef Dobrovský, babanë e tij shpirtëror dhe më vonë me filologun serb Vuk Karadzic.