@article{MAN_1983__265_163835,
     author = {R.E. Stong},
     title = {Pseudofree {Actions} and the {Greedy} {Algorithm.}},
     journal = {Mathematische Annalen},
     pages = {501--512},
     publisher = {mathdoc},
     volume = {265},
     year = {1983},
     zbl = {0507.57031},
     url = {http://geodesic.mathdoc.fr/item/MAN_1983__265_163835/}
}