%0 Journal Article %A E. Barnes %T The construction of perfect and extreme forms I %J Acta Arithmetica %D 1959 %P 57-79 %V 5 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-5-1-57-79/ %R 10.4064/aa-5-1-57-79 %G en %F 10_4064_aa_5_1_57_79