%0 Journal Article %A S. Yu. Petropavlovskaya %T Conformal Poincaré interpretation of a degenerate geometry in a dual variable plane, and Norden's normalization theory %J Trudy Geometricheskogo Seminara %D 1997 %P 85-98 %V 23 %U http://geodesic.mathdoc.fr/item/KUTGS_1997_23_a8/ %G ru %F KUTGS_1997_23_a8