@article{GDZPPN002331489,
title = {Heegaard Splittings and Branched Coverings of B3.},
journal = {Mathematische Annalen},
volume = {280},
year = {1988},
pages = {531-544},
zbl = {0627.57007},
url = {http://dml.mathdoc.fr/item/GDZPPN002331489}
}
Bleiler, Steven A.; Moriah, Yoav. Heegaard Splittings and Branched Coverings of B3.. Mathematische Annalen, Tome 280 (1988) pp. 531-544. http://gdmltest.u-ga.fr/item/GDZPPN002331489/