Authors: Georgiev, K. Filev, K. Mitev Publish: Zemjodesko-Šumarski fakultet ‘ Skopje

Authors: Natasha Gjorgovska, Kiril Filev, Vesna Levkov, Rodne Nastova Publish: 2015, ISSN 1392-2130. VETERINARIJA IR ZOOTECHNIKA (Vet Med Zoot). T.

Authors: N. Gjorgovska, K. Filev, V. Levkov, V. Kostov, R. Nastova,S. Gjorgjievski and S. Grigorova Publish: Sep 2016, Islamic Azad

Authors: Natasha GJORGOVSKA, Kiril FILEV, Vesna LEVKOV, Rodne NASTOVA,Svetlana GRIGOROVA Publish: Scientific Papers. Series D. Animal Science. Vol. LX, 2017,

Authors: Marijan Stevanovski, Kiril Filev, Kristina Stevanovska Publish: 2016, International Journal of Recent Research in Arts and Sciences, MIT University

Authors: Kiril Filev, Marijan Stevanovski, Natasha Gjorgovska,Daniela Belichovska Publish: International Journal of Recent Research in Arts and Sciences, MIT University

Автори: Ј. Шокаровски, К. Филев, Г. Панов, Т. Ангеловски Објавено: Март 1973, II Собир – Наука и стопанство, Скопје

Authors: Natasha GJORGOVSKA, Kiril FILEV, Vesna LEVKOV, Rodne NASTOVA, Vasil KOSTOV, Srekjko GJORGJIEVSKI, Svetlana GRIGOROVA Publish: Bulletin UASVM Animal Science

Authors: Publish: 1972, Zbornik radova, Beograd