A geometric invariant of discrete groups.
Neumann, W.D. ; Bieri, R. ; Strebel, R.
Inventiones mathematicae, Tome 88 (1987), p. 451-478 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1987-01-01
EUDML-ID : urn:eudml:doc:143518 
@article{GDZPPN002104636,
     title = {A geometric invariant of discrete groups.},
     journal = {Inventiones mathematicae},
     volume = {88},
     year = {1987},
     pages = {451-478},
     zbl = {0642.57002},
     url = {http://dml.mathdoc.fr/item/GDZPPN002104636}
}

Neumann, W.D.; Bieri, R.; Strebel, R. A geometric invariant of discrete groups.. Inventiones mathematicae, Tome 88 (1987) pp. 451-478. http://gdmltest.u-ga.fr/item/GDZPPN002104636/