%0 Journal Article
%A Lenni Haapasalo
%T Bernd Zimmermann (Obituary)
%J The Teaching of Mathematics
%D 2018
%P 53 
%V XXI
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TM2_2018_XXI_1_a4/
%F TM2_2018_XXI_1_a4