TY  - JOUR
AU  - D.L. Ulmer
TI  - On universal elliptic curves over Igusa curves.
JO  - Inventiones mathematicae
PY  - 1990
SP  - 377
EP  - 392
VL  - 99
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1990__99_1_143763/
ID  - IM_1990__99_1_143763
ER  -