@article{MAN_1988__281_4_164437,
     author = {Steven A. Bleiler and Yoav Moriah},
     title = {Heegaard {Splittings} and {Branched} {Coverings} of {B3.}},
     journal = {Mathematische Annalen},
     pages = {531--544},
     publisher = {mathdoc},
     volume = {281},
     number = {4},
     year = {1988},
     zbl = {0627.57007},
     url = {http://geodesic.mathdoc.fr/item/MAN_1988__281_4_164437/}
}