Digitized University Textbook of Prof. Zaharije Brkić in Virtual Library of Faculty of Mathematics

Viktor Radović, Nadežda Pejović

In the Virtual Library of the Faculty of Mathematics there are three digitized publications by professor Zaharije Brkić. These publications include his doctoral dissertation, which represents the first dissertation in astronomy that had been defended on Belgrade university. Also, two university textbooks written with prof. Branislav Ševarlić are digitized. In this paper, we give detailed analysis of these works along with explanations of their importance.