Dragos M. Cvetkovic: A brilliant scientific career that is going on

The year before (2016) was the 75th anniversary of the birth of Professor Dragoš M. Cvetković (born 1941 in Sremska Mitrovica, Serbia). On that occasion, in May 2016 in Belgrade, it was organized the conference ”Spectra of Graphs and Applications 2016” and six papers of the conference, all dedicated to Professor Cvetković, were published in the previous volume (April 2017) of AADM, while some remaining papers are published in this volume. Professor Dragoš Cvetković spent his whole active university career at Department of Applied Mathematics of Faculty of Electrical Engineering, University of Belgrade, and, after having retired, he continued his fruitful scientific work, which means that it has already lasted more than 50 years. He is an eminent and significant mathematician, very well known in the field of graph theory and some related disciplines, author or coauthor of a huge number of papers and books and, among them, several fundamental monographs, and one of few founders of the spectral graph theory. In Serbia he is one of the most significant and fruitful mathematicians, full member of the Serbian Academy of Sciences and Arts, educator of many scientists in the field of discrete mathematics and a teacher of many generations of students of electrical engineering. As the result of his continuous and successful scientific work we have today some 230 scientific papers, published throughout the world, in various fields of discrete mathematics, with prevailing those of spectral graph theory. We have 78 books (including repeated editions) with various subjects and purposes (monographs, collections of articles, university textbooks, up to popular mathematical literature), but where a significant part is par exellance scinetific literature.