@article{KUTGS_1997_23_a8,
     author = {S. Yu. Petropavlovskaya},
     title = {Conformal {Poincar\'e} interpretation of a~degenerate geometry in a~dual variable plane, and {Norden's} normalization theory},
     journal = {Trudy Geometricheskogo Seminara},
     pages = {85--98},
     publisher = {mathdoc},
     volume = {23},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUTGS_1997_23_a8/}
}