%0 Journal Article
%A Tomonori Fukunaga
%T Homotopy classification of nanophrases 
 with at most four letters
%J Fundamenta Mathematicae
%D 2011
%P 101-118
%V 214
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm214-2-1/
%R 10.4064/fm214-2-1
%G en
%F 10_4064_fm214_2_1