%0 Journal Article %A Czédli, Gábor %T Reducing the lengths of slim planar semimodular lattices without changing their congruence lattices %J Mathematica Bohemica %D 2024 %P 503-532 %V 149 %N 4 %U http://geodesic.mathdoc.fr/articles/10.21136/MB.2024.0006-23/ %R 10.21136/MB.2024.0006-23 %G en %F 10_21136_MB_2024_0006_23