%0 Journal Article %A Stephen Agard %A Richard Fehlmann %T On the extremality and unique extremality of affine mappings in space, an addendum %J Annales Fennici Mathematici %D 1987 %P 299-301 %V 12 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1987.1201/ %R 10.5186/aasfm.1987.1201 %G en %F AFM_1987_12_2_a12