@article{SM_1988_60_2_a6,
     author = {D. I. Panyushev},
     title = {Orbits of maximal dimension of~solvable subgroups of reductive linear groups, and reduction for $U$-invariants},
     journal = {Sbornik. Mathematics},
     pages = {365--375},
     publisher = {mathdoc},
     volume = {60},
     number = {2},
     year = {1988},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1988_60_2_a6/}
}