@article{MM2_1995__86_3_156067,
     author = {E. Jespers and G. Leal},
     title = {Degree 1 and 2 representations of nilpotent groups and applications to units of group rings.},
     journal = {Manuscripta mathematica},
     pages = {479--498},
     publisher = {mathdoc},
     volume = {86},
     number = {3},
     year = {1995},
     zbl = {0834.16034},
     url = {http://geodesic.mathdoc.fr/item/MM2_1995__86_3_156067/}
}