Telephone :
(212) 939-7030 (office),
(212) 939-7030 (office),
(212) 939-7177 (NSL Lab)
e-mail:
stelios__^NOSPAM^__@cs.columbia.edu
Address :
Department of Computer Science, Columbia University
1214 Amsterdam Avenue, M.C. 0401
New York, NY 10027-7003