@article{ZNSL_2019_485_a9,
     author = {I. Panin},
     title = {A short exact sequence},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {176--186},
     publisher = {mathdoc},
     volume = {485},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2019_485_a9/}
}