TY - JOUR AU - Chajda, I. AU - Kolařík, M. TI - Directoids with sectionally antitone involutions and skew MV-algebras JO - Mathematica Bohemica PY - 2007 SP - 407 EP - 422 VL - 132 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/MB.2007.133967/ DO - 10.21136/MB.2007.133967 LA - en ID - 10_21136_MB_2007_133967 ER -