* Marc L. Greenberg, "Uralic Influences in South Slavic"* Arne Hult, "On the verbal morphology of the South Slavic languages (in comparison with the North Slavic languages, especially Russian", "Papers from First Conference on Formal Approaches to South Slavic Languages".
* Marc L. Greenberg, "Uralic Influences in South Slavic"* Arne Hult, «On the verbal morphology of the South Slavic languages (in comparison with the North Slavic languages, especially Russian», "Papers from First Conference on Formal Approaches to South Slavic Languages".