%0 Journal Article
%A Friberg, J.
%T Principal parts and canonical factorisation of hypoelliptic polynomials in two variables
%J Rendiconti del Seminario Matematico della Università di Padova
%D 1967
%P 112-132
%V 37
%I Seminario Matematico of the University of Padua
%U http://www.numdam.org/item/RSMUP_1967__37__112_0/
%G en
%F RSMUP_1967__37__112_0