@article{MM2_1991__73_1_155656,
     author = {Gang Tian and Yan Yan Li},
     title = {Nonexistence of axially symmetric, stationary solution of {Einstein} vacuum equation with disconnected symmetric event horizon.},
     journal = {Manuscripta mathematica},
     pages = {83--90},
     publisher = {mathdoc},
     volume = {73},
     number = {1},
     year = {1991},
     zbl = {0753.53053},
     url = {http://geodesic.mathdoc.fr/item/MM2_1991__73_1_155656/}
}