%0 Journal Article
%A Pogonowski, Jerzy
%T Remarks on the Principle of Permanence of Forms
%J Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Mathematicae Pertinentia
%D 2019
%P 127-141
%V 11
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AUPCDM_2019_11_1_a7/
%G en
%F AUPCDM_2019_11_1_a7