@article{JOLT_2012_22_4_a1,
     author = {Osvaldo G. do Rocio and Luiz A. B. San Martin and Marcos Andr\'e Verdi},
     title = {Semigroup {Actions} on {Adjoint} {Orbits}},
     journal = {Journal of Lie Theory},
     pages = {931--948},
     year = {2012},
     volume = {22},
     number = {4},
     url = {http://geodesic.mathdoc.fr/item/JOLT_2012_22_4_a1/}
}