@article{10_1017_S0017089500005723,
     author = {Wrobel, Volker},
     title = {Superdiagonal forms for related linear operators},
     journal = {Glasgow mathematical journal},
     pages = {19--23},
     year = {1985},
     volume = {26},
     number = {1},
     doi = {10.1017/S0017089500005723},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500005723/}
}