TY - JOUR AU - Chajda, Ivan TI - Ring-like structures derived from $\lambda $-lattices with antitone involutions JO - Mathematica Bohemica PY - 2007 SP - 87 EP - 96 VL - 132 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/MB.2007.133992/ DO - 10.21136/MB.2007.133992 LA - en ID - 10_21136_MB_2007_133992 ER -