title: Ultrasensitive chemical analysis by Raman spectroscopy.
authors.affiliation: Physics Department, Technical University Berlin, D 10623 Berlin, Germany, and G. R. Harrison Spectroscopy Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139.
authors.forename: K
authors.initials: K
authors.lastname: Kneipp
authors.forename: H
authors.initials: H
authors.lastname: Kneipp
authors.forename: I
authors.initials: I
authors.lastname: Itzkan
authors.forename: R R
authors.initials: RR
authors.lastname: Dasari
authors.forename: M S
authors.initials: MS
authors.lastname: Feld