title: Comment on "triplet-to-singlet exciton formation in poly(p-phenylene-vinylene) light-emitting diodes".
authors.affiliation: Department of Physics Abo Akademi University Porthansgatan 3 FIN-20500 Turku, Finland. rosterba@abo.fi
authors.forename: R
authors.initials: R
authors.lastname: Osterbacka