%0 Journal Article %A Éric Goubault %A Jean Goubault-Larrecq %T On the geometry of intuitionistic S4 proofs %J Homology, homotopy, and applications %D 2003 %P 137-209 %V 5 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4310/HHA.2003.v5.n2.a6/ %R 10.4310/HHA.2003.v5.n2.a6 %G en %F HHA_2003_5_2_a7