TY  - JOUR
AU  - Jean-Pierre Otal
AU  - J.W. Morgan
TI  - Relative growth rates of closed geodesics on a surface under varying hyperbolic structures.
JO  - Commentarii mathematici Helvetici
PY  - 1993
SP  - 171
EP  - 208
VL  - 68
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMH_1993__68_2_140298/
ID  - CMH_1993__68_2_140298
ER  -