@article{CM_1987__61_1_3_0, author = {B\"urgstein, Hartmut and Hesselink, Wim H.}, title = {Algorithmic orbit classification for some {Borel} group actions}, journal = {Compositio Mathematica}, pages = {3--41}, publisher = {Martinus Nijhoff Publishers}, volume = {61}, number = {1}, year = {1987}, mrnumber = {879187}, zbl = {0612.17005}, language = {en}, url = {http://www.numdam.org/item/CM_1987__61_1_3_0/} }