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@article{PORMA_1993__50_4_115101, author = {Basto Gon\c{c}alves, J.}, title = {Invariant manifolds of a differentiable vector field}, journal = {Portugaliae mathematica}, pages = {497--505}, publisher = {mathdoc}, volume = {50}, number = {4}, year = {1993}, mrnumber = {1279163}, zbl = {0818.34022}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1993__50_4_115101/} }
Basto Gonçalves, J. Invariant manifolds of a differentiable vector field. Portugaliae mathematica, Tome 50 (1993) no. 4, pp. 497-505. http://geodesic.mathdoc.fr/item/PORMA_1993__50_4_115101/