@article{MAN_1981__256_163510,
     author = {Paul Melvin},
     title = {On {4-Manifolds} with {Singular} {Torus} {Actions.}},
     journal = {Mathematische Annalen},
     pages = {255--276},
     publisher = {mathdoc},
     volume = {256},
     year = {1981},
     zbl = {0437.57007},
     url = {http://geodesic.mathdoc.fr/item/MAN_1981__256_163510/}
}