TY  - JOUR
A1  - Schmidt, Robert W.
A1  - Wambsganß, Joachim
A1  - Pen, U.-L.
A1  - Turner, E. L.
T1  - APO monitoring of Q2237+0305 in 1995-97 : evidence for microlensing
Y1  - 2001
SN  - 1-583-81074-9
ER  -