Germán Rivas -
Centro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu 9, E-28040 Madrid, Spain
Frank Ferrone -
Department of Physics, Drexel University, Philadelphia, Pennsylvania 19104, USA
Judith Herzfeld -
Department of Chemistry, MS #015, Brandeis University, Waltham, Massachusetts 02454-9110, USA