@article{10_4064_cm_81_1_33_50,
     author = {J. Gonz\'alez-D\'avila and L. Vanhecke},
     title = {Invariants and flow geometry},
     journal = {Colloquium Mathematicum},
     pages = {33--50},
     publisher = {mathdoc},
     volume = {81},
     number = {1},
     year = {1999},
     doi = {10.4064/cm-81-1-33-50},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-81-1-33-50/}
}