TY - JOUR AU - Jakubík, Ján TI - Direct product decompositions of directed groups JO - Czechoslovak Mathematical Journal PY - 1989 SP - 618 EP - 621 VL - 39 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1989.102336/ DO - 10.21136/CMJ.1989.102336 LA - en ID - 10_21136_CMJ_1989_102336 ER -