%0 Journal Article
%A Ulrike Vorhauer
%A Eduard Wirsing
%T Three two-dimensional Weyl steps in the circle problem I. The Hessian determinant
%J Acta Arithmetica
%D 1999
%P 43-55
%V 91
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/aa-91-1-43-55/
%R 10.4064/aa-91-1-43-55
%G en
%F 10_4064_aa_91_1_43_55