TY - JOUR AU - Novotný, Miroslav TI - Mono-unary algebras in the work of Czechoslovak mathematicians JO - Archivum mathematicum PY - 1990 SP - 155 EP - 164 VL - 26 IS - 2-3 UR - http://geodesic.mathdoc.fr/item/ARM_1990_26_2-3_a12/ LA - en ID - ARM_1990_26_2-3_a12 ER -