@article{CM_1985__55_1_89_0,
     author = {Hesselink, Wim H.},
     title = {A classification of the nilpotent triangular matrices},
     journal = {Compositio Mathematica},
     pages = {89--133},
     publisher = {Martinus Nijhoff Publishers},
     volume = {55},
     number = {1},
     year = {1985},
     mrnumber = {791648},
     zbl = {0579.15011},
     language = {en},
     url = {http://www.numdam.org/item/CM_1985__55_1_89_0/}
}