%0 Journal Article %A Barmak, Jonathan Ariel %T Invariants for metabelian groups of prime power exponent, colorings, and stairs %J Canadian journal of mathematics %D 2023 %P 267-297 %V 75 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/S0008414X21000675/ %R 10.4153/S0008414X21000675 %F 10_4153_S0008414X21000675