Prof. JÁNOS KLÁR (1906-1972) Citation data from Crossref and Scopus PDF How to Cite “Prof. JÁNOS KLÁR (1906-1972) ” Periodica Polytechnica Chemical Engineering, 17(1), pp. 3–5, 1973. More Citation Formats Periodica Polytechnica Numbered ACM Chicago Harvard IEEE Vancouver Issue Vol. 17 No. 1 (1973) Section Articles