| Office: | DRL, room 4N59 |
| Phone: | (215)573-9074 |
| Fax: | (215) 573-4063 |
| E-mail: |
natasas@math.upenn.edu |
| Address: |
University of Pennsylvania Department of Mathematics David Rittenhouse Lab 209 South 33rd street Philadelphia, PA, 19103 |