@article{10_1017_S0017089500002822,
     author = {Loewy, Raphael},
     title = {On ranges of {Lyapunov} transformations {IV{\textdagger}}},
     journal = {Glasgow mathematical journal},
     pages = {112--118},
     year = {1976},
     volume = {17},
     number = {2},
     doi = {10.1017/S0017089500002822},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500002822/}
}