The Institute of Mathematics and Informatics of BAS and the Scientific Board for the awarding of the scientific degree Doctor of Science hereby announce that on May 15, 20189 at 11:00 a.m., in the Multimedia Room of the Institute of Mathematics and Informatics, Acad. Georgi Bonchev Street, Block 8, Sofia, an open meeting of the Scientific Board will be held for the defense of the dissertation on: CLASSIFICATION OF DESIGNS AND SIMILAR COMBINATORIAL STRUCTURES of SVETLANA TOPALOVA Higher Education Field 4. Science, mathematics and Informatics, Professional division 4.6. Informatics and Computer Science, Research Field “Informatics” Chairman of the Scientific Board: Prof. Peter Boyvalenkov Members of the Scientific Board: Prof. Ivan Landjev - reviewer Prof. Nikolay Yankov - reviewer Prof. Nikolay Manev - reviewer Prof. [...]