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, no. 2, 2008, 241
DMITRI I. PANYUSHEV, OKSANA S. YAKIMOVA, “NILPOTENT SUBSPACES AND NILPOTENT ORBITS”, J. Aust. Math. Soc., 106, no. 1, 2019, 104
Giovanna Carnovale, “A classification of spherical conjugacy classes in good characteristic”, Pacific J. Math., 245, no. 1, 2010, 25