%0 Journal Article %A Novotný, Miroslav %T Mono-unary algebras in the work of Czechoslovak mathematicians %J Archivum mathematicum %D 1990 %P 155-164 %V 26 %N 2-3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_1990__26_2-3_a12/ %G en %F ARM_1990__26_2-3_a12