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@article{ND_2005_1_2_a7, author = {F. Diacu}, title = {Singularities of the {Newtonian} $N$-body problem}, journal = {Russian journal of nonlinear dynamics}, pages = {261--280}, publisher = {mathdoc}, volume = {1}, number = {2}, year = {2005}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/ND_2005_1_2_a7/} }
F. Diacu. Singularities of the Newtonian $N$-body problem. Russian journal of nonlinear dynamics, Tome 1 (2005) no. 2, pp. 261-280. http://geodesic.mathdoc.fr/item/ND_2005_1_2_a7/