[Obrazová příloha k článku Sjezdy JČSMF: JČMF a JSMF]. (Czech) [[Accompanying pictures to the article: Congresses of the Union of Czechoslovak (and Slovak) Mathematicians and Physicists held in August 22-24, 1990 in Nitra]]. Pokroky matematiky, fyziky a astronomie, vol. 36 (1991), issue 4, pp. 197-200