Invariant f -structures on the flag manifolds SO ( n ) / SO ( 2 ) × SO ( n - 3 ) . Balashchenko, Vitaly V.; Sakovich, Anna — 2006 International Journal of Mathematics and Mathematical Sciences
Invariant structures on the 6-dimensional generalized Heisenberg group Vitaly V. Balashchenko — 2011 Kragujevac Journal of Mathematics