@article{ZNSL_2007_343_a2,
     author = {N. A. Vavilov and I. M. Pevzner},
     title = {Triples of long root subgroups},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {54--83},
     publisher = {mathdoc},
     volume = {343},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2007_343_a2/}
}