[1] Decomposition of rational numbers into sums of unit fractions (in Hungarian), Conference on Didactics of Mathematics and Informatics, 24-26 January 2014, Eger.
[2] Log-convexity of combinatorial sequences, International Student Conference on Applied Mathematics and Informatics, 27-30 March 2014, Malenovice (Czech Republic).
[3] Log-convexity of combinatorial sequences (in Hungarian), Number Theory and Cryptography Days in Komárno, 24 May 2014, Komárno (Slovakia).
[4] A new combinatorial interpretation of r-Whitney numbers, 5th Polish Combinatorial Conference, 22-26 September 2014, Będlewo (Poland).
[5] A new combinatorial interpretation of r-Whitney and r-Whitney-Lah numbers, 33. Kolloquium über Kombinatorik, 7-8 November 2014, Ilmenau (Germany).
[6] Recent results on r-Whitney numbers, International Student Conference on Applied Mathematics and Informatics, 23-26 April 2015, Kočovce (Slovakia).
[7] Combinatorial study of r-Whitney and r-Dowling numbers, 8th Slovenian Conference on Graph Theory, 21-27 June 2015, Kranjska Gora (Slovenia).
[8] On properties of the r-Dowling polynomials, 29th Journées Arithmétiques, 6-10 July 2015, Debrecen (Hungary).
[9] The r-Dowling numbers and polynomials (poster), 2nd Algorithmic and Enumerative Combinatorics Summer School, 27-31 July 2015, Hagenberg (Austria).