Blažeković began his career at the Zagreb Film studio with "mini" short films such as The Fish, Ikarus, Vergl and Gorilla Dance (1968), The Man Who Had to Sing (October 1971) and Man: The Polluter (August 8, 1973), the latter for the National Film Board of Canada. In later years, he directed three children's films with the animation unit of Croatia Film: The Elm-Chanted Forest (June 19, 1986), The Magician's Hat (January 1, 1990) and Lapitch the Little Shoemaker (October 23, 1997).
By around 2000, Blažeković ended his partnership with Croatia Film, and returned to Zagreb Film to work on a fourth animated feature, Tales of Long Ago (Priče iz davnine), which was initially planned for a Christmas 2003 release.
- Preminuo doajen hrvatske animacije Milan Blažeković (in Croatian)
- Milan Blazekovic - NFB
- "Tales of Long Ago project information". Animafest Zagreb. Retrieved 2009-05-08.
- "The Hedgehog's House project information". Animafest Zagreb. Retrieved 2009-05-08.
- "Mostarci prave prvi dugometražni crtić u BiH" (in Croatian). Bljesak.info. 2008-04-23. Archived from the original on 2008-06-25. Retrieved 2009-03-23.
- Žmirić, Zoran (2008-10-31). "SNIMATELJU ERNESTU GREGLU POSEBNO PRIZNAJE ASIFA-E HRVATSKE" (in Croatian). Popcorn Cinema. Retrieved 2009-03-23.
- Korać, Senka (2009-03-09). "U Getu se krivica stiče rođenjem: Veselin Gatalo" (in Croatian). KnjigaInfo.com. Retrieved 2009-03-23.