@article{GT_1997_1_1_a2,
     author = {Neumann, Walter D and Swarup, Gadde A},
     title = {Canonical decompositions of 3{\textendash}manifolds},
     journal = {Geometry & topology},
     pages = {21--40},
     publisher = {mathdoc},
     volume = {1},
     number = {1},
     year = {1997},
     doi = {10.2140/gt.1997.1.21},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.1997.1.21/}
}