TY  - JOUR
AU  - Cornell, Gary
AU  - Rosen, Michael I.
TI  - The $\ell $-rank of the real class group of cyclotomic fields
JO  - Compositio Mathematica
PY  - 1984
SP  - 133
EP  - 141
VL  - 53
IS  - 2
PB  - Martinus Nijhoff Publishers
UR  - http://www.numdam.org/item/CM_1984__53_2_133_0/
LA  - en
ID  - CM_1984__53_2_133_0
ER  -