@article{GDZPPN002104962,
title = {Non-minimal modular symbols for GL(n).},
journal = {Inventiones mathematicae},
volume = {93},
year = {1988},
pages = {483-492},
zbl = {0671.22005},
url = {http://dml.mathdoc.fr/item/GDZPPN002104962}
}
Ash, Avner. Non-minimal modular symbols for GL(n).. Inventiones mathematicae, Tome 93 (1988) pp. 483-492. http://gdmltest.u-ga.fr/item/GDZPPN002104962/