@article{ASENS_2008_4_41_6_1023_0,
     author = {Petrov, Viktor and Semenov, Nikita and Zainoulline, Kirill},
     title = {$J$-invariant of linear algebraic groups},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {1023--1053},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {Ser. 4, 41},
     number = {6},
     year = {2008},
     doi = {10.24033/asens.2088},
     mrnumber = {2504112},
     zbl = {1206.14017},
     language = {en},
     url = {http://www.numdam.org/articles/10.24033/asens.2088/}
}