@article{GT_2008_12_4_a11,
     author = {Bachman, David},
     title = {Connected sums of unstabilized {Heegaard} splittings are unstabilized},
     journal = {Geometry & topology},
     pages = {2327--2378},
     publisher = {mathdoc},
     volume = {12},
     number = {4},
     year = {2008},
     doi = {10.2140/gt.2008.12.2327},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2008.12.2327/}
}