@article{ZNSL_2009_373_a2,
     author = {N. Vavilov and A. Luzgarev and A. Stepanov},
     title = {Calculations in exceptional groups over rings},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {48--72},
     publisher = {mathdoc},
     volume = {373},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2009_373_a2/}
}