Power and limitations of the chloroplast trnL (UAA) intron for plant DNA barcoding. - Taberlet,P.; Coissac,E.; Pompanon,F.; Gielly,L.; Miquel,C.; Valentini,A.; Vermat,T.; Corthier,G.; Brochmann,C.; Willerslev,E. (Nucleic Acids Res, 2007)