\Bibitem{Nes04} \by V.~V.~Nesterov \paper Generation of pairs of short root subgroups in Chevalley groups \jour Algebra i Analiz \yr 2004 \vol 16 \issue 6 \pages 172--208 \mathnet{http://mi.mathnet.ru/aa643} \mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=2117453} \zmath{https://zbmath.org/?q=an:1096.20039} \transl \jour St. Petersburg Math. J. \yr 2005 \vol 16 \issue 6 \pages 1051--1077 \crossref{https://doi.org/10.1090/S1061-0022-05-00890-3}