@article{10_2140_agt_2005_5_1573,
     author = {Johnson, Jesse},
     title = {Locally unknotted spines of {Heegaard} splittings},
     journal = {Algebraic and Geometric Topology},
     pages = {1573--1584},
     year = {2005},
     volume = {5},
     number = {4},
     doi = {10.2140/agt.2005.5.1573},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2005.5.1573/}
}