M. Källersjö, G. Bergqvist & A. A. Anderberg (2000). "Generic realignment in primuloid families of the Ericales s. l.: a phylogenetic analysis based on DNA sequences from three chloroplast genes and morphology". American Journal of Botany. 87 (9). American Journal of Botany, Vol. 87, No. 9: 1325–1341. doi:10.2307/2656725. JSTOR2656725. PMID10991903.
M. Källersjö, G. Bergqvist & A. A. Anderberg (2000). "Generic realignment in primuloid families of the Ericales s. l.: a phylogenetic analysis based on DNA sequences from three chloroplast genes and morphology". American Journal of Botany. 87 (9). American Journal of Botany, Vol. 87, No. 9: 1325–1341. doi:10.2307/2656725. JSTOR2656725. PMID10991903.
M. Källersjö, G. Bergqvist & A. A. Anderberg (2000). "Generic realignment in primuloid families of the Ericales s. l.: a phylogenetic analysis based on DNA sequences from three chloroplast genes and morphology". American Journal of Botany. 87 (9). American Journal of Botany, Vol. 87, No. 9: 1325–1341. doi:10.2307/2656725. JSTOR2656725. PMID10991903.