%0 Journal Article
%A Dirk van Dalen
%T A model for HAS. A topological interpretation of the theory of species of natural numbers
%J Fundamenta Mathematicae
%D 1974
%P 167-174
%V 82
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-82-2-167-174/
%R 10.4064/fm-82-2-167-174
%G en
%F 10_4064_fm_82_2_167_174