%A Fodor GĂŠza %A MĂĄtĂŠ Attila %N 3-4 %P 247-254 %D 1969 %L acta14229 %O Bibliogr.: 254. p. %K TermĂŠszettudomĂĄny, Matematika, MĹąvelĹdĂŠs %T Some results concerning regressive functions %J Acta scientiarum mathematicarum %V 30