@article{GT_2014_18_4_a9,
     author = {Young, Robert},
     title = {Lipschitz connectivity and filling invariants in solvable groups and buildings},
     journal = {Geometry & topology},
     pages = {2375--2417},
     publisher = {mathdoc},
     volume = {18},
     number = {4},
     year = {2014},
     doi = {10.2140/gt.2014.18.2375},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2014.18.2375/}
}