@article{JEMS_2000_2_1_a1,
     author = {Alan Weinstein},
     title = {Almost invariant submanifolds for compact group actions},
     journal = {Journal of the European Mathematical Society},
     pages = {53--86},
     publisher = {mathdoc},
     volume = {2},
     number = {1},
     year = {2000},
     doi = {10.1007/s100970050014},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s100970050014/}
}