TY  - JOUR
AU  - Dominique Arlettaz
TI  - Exponents for extraordinary homology groups.
JO  - Commentarii mathematici Helvetici
PY  - 1993
SP  - 653
EP  - 672
VL  - 68
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMH_1993__68_2_140321/
ID  - CMH_1993__68_2_140321
ER  -