Jacopo Gandini, “Fully commutative elements and spherical nilpotent orbits”, Journal of Algebra, 610, 2022, 76
Eric N. Sommers, “Equivalence Classes of Ideals in the Nilradical of a Borel Subalgebra”, Nagoya Mathematical Journal, 183, 2006, 161
Russell Fowler, Gerhard Röhrle, “Spherical nilpotent orbits in positive characteristic”, Pacific J. Math., 237, № 2, 2008, 241
DMITRI I. PANYUSHEV, OKSANA S. YAKIMOVA, “NILPOTENT SUBSPACES AND NILPOTENT ORBITS”, J. Aust. Math. Soc., 106, № 1, 2019, 104
Giovanna Carnovale, “A classification of spherical conjugacy classes in good characteristic”, Pacific J. Math., 245, № 1, 2010, 25