%0 Journal Article %A Vladimir Kanovei %T Two dichotomy theorems on colourability of non-analytic graphs %J Fundamenta Mathematicae %D 1997 %P 183-201 %V 154 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-154-2-183-201/ %R 10.4064/fm-154-2-183-201 %G en %F 10_4064_fm_154_2_183_201