%D 1969 %L acta14238 %J Acta scientiarum mathematicarum %T On a problem of P. ErdĹs %P 301-304 %O Bibliogr.: 304. p. %A MĂĄtĂŠ EĂśrs %N 3-4 %V 30 %K ErdĹs PĂĄl, TermĂŠszettudomĂĄny, Matematika, MĹąvelĹdĂŠs