%0 Journal Article
%A R. Rankin
%T On the representation of a number as the sum of any number of squares, and in particular of twenty
%J Acta Arithmetica
%D 1961
%P 399-407
%V 7
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/aa-7-4-399-407/
%R 10.4064/aa-7-4-399-407
%G en
%F 10_4064_aa_7_4_399_407