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@article{MAN_1927__97_182664, author = {T.R. Hollcroft}, title = {On the reality of singularities of plane curves}, journal = {Mathematische Annalen}, pages = {775--787}, publisher = {mathdoc}, volume = {97}, year = {1927}, zbl = {53.0615.12}, url = {http://geodesic.mathdoc.fr/item/MAN_1927__97_182664/} }
T.R. Hollcroft. On the reality of singularities of plane curves. Mathematische Annalen, Tome 97 (1927), pp. 775-787. http://geodesic.mathdoc.fr/item/MAN_1927__97_182664/