@article{10_4007_annals_2014_179_3_3,
     author = {Eva Viehmann},
     title = {Truncations of level $1$ of elements in the loop group of a reductive group},
     journal = {Annals of mathematics},
     pages = {1009--1040},
     publisher = {mathdoc},
     volume = {179},
     number = {3},
     year = {2014},
     doi = {10.4007/annals.2014.179.3.3},
     mrnumber = {3171757},
     zbl = {06302167},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2014.179.3.3/}
}