@article{10_4064_cm_68_1_7_16,
     author = {Jacek Dziuba\'nski and Andrzej Hulanicki and Joe Jenkins},
     title = {A nilpotent {Lie} algebra and eigenvalue estimates},
     journal = {Colloquium Mathematicum},
     pages = {7--16},
     publisher = {mathdoc},
     volume = {68},
     number = {1},
     year = {1995},
     doi = {10.4064/cm-68-1-7-16},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-68-1-7-16/}
}