%0 Journal Article %A Lorimer, J. W. %T Locally Compact Hjelmslev Planes and Rings %J Canadian journal of mathematics %D 1981 %P 988-1021 %V 33 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1981-077-5/ %R 10.4153/CJM-1981-077-5 %F 10_4153_CJM_1981_077_5