@article{GT_2004_8_1_a9,
     author = {Neumann, Walter D},
     title = {Extended {Bloch} group and the {Cheeger{\textendash}Chern{\textendash}Simons} class},
     journal = {Geometry & topology},
     pages = {413--474},
     publisher = {mathdoc},
     volume = {8},
     number = {1},
     year = {2004},
     doi = {10.2140/gt.2004.8.413},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2004.8.413/}
}