TY - JOUR AU - Bürgstein, Hartmut AU - Hesselink, Wim H. TI - Algorithmic orbit classification for some Borel group actions JO - Compositio Mathematica PY - 1987 SP - 3 EP - 41 VL - 61 IS - 1 PB - Martinus Nijhoff Publishers UR - http://www.numdam.org/item/CM_1987__61_1_3_0/ LA - en ID - CM_1987__61_1_3_0 ER -