@article{10_1017_S0017089502001155,
     author = {FEIX, BIRTE and PEDERSEN, HENRIK},
     title = {HYPERK\"AHLER {STRUCTURES} {WITH} {TORSION} {ON} {NILPOTENT} {LIE} {GROUPS}},
     journal = {Glasgow mathematical journal},
     pages = {189--198},
     year = {2003},
     volume = {45},
     number = {1},
     doi = {10.1017/S0017089502001155},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089502001155/}
}