TY - JOUR AU - Rmoutil, Martin TI - Products of non-$\sigma $-lower porous sets JO - Czechoslovak Mathematical Journal PY - 2013 SP - 205 EP - 217 VL - 63 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1007/s10587-013-0014-4/ DO - 10.1007/s10587-013-0014-4 LA - en ID - 10_1007_s10587_013_0014_4 ER -