Affiliation: | (1) Courant Institute of Mathematical Sciences, New York University, 10012 New York, New York;(2) Chemistry Department, SUNY at Albany, 12222 New York, New York;(3) Universität Bremen, Postfach 330 440, 2800 Bremen 33, Germany;(4) Physics Department, New York University, 10003 New York, New York |