%0 Journal Article
%A Janovská, Drahoslava
%A Opfer, Gerhard
%T Zeros and singular points for one-sided coquaternionic polynomials with an extension to other $R^4$ algebras
%J Electronic transactions on numerical analysis
%D 2014
%P 133-158
%V 41
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ETNA_2014__41__a17/
%G en
%F ETNA_2014__41__a17