@article{GT_2000_4_1_a5,
     author = {Scott, Peter and Swarup, Gadde A},
     title = {Splittings of groups and intersection numbers},
     journal = {Geometry & topology},
     pages = {179--218},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {2000},
     doi = {10.2140/gt.2000.4.179},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2000.4.179/}
}