@article{10_4064_sm_88_1_1_11,
     author = {J. Boidol and J. Ludwig and D. M\"uller},
     title = {On infinitely small orbits},
     journal = {Studia Mathematica},
     pages = {1--11},
     publisher = {mathdoc},
     volume = {88},
     number = {1},
     year = {1988},
     doi = {10.4064/sm-88-1-1-11},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-88-1-1-11/}
}