@article{MAN_1971__193_182713,
     author = {Peter ORLIK and Philip WAGREICH},
     title = {Singularities of {Algebraic} {Surfaces} with {C*} {Action.}},
     journal = {Mathematische Annalen},
     pages = {121--135},
     publisher = {mathdoc},
     volume = {193},
     year = {1971},
     zbl = {0206.24003},
     url = {http://geodesic.mathdoc.fr/item/MAN_1971__193_182713/}
}