Karaer, F., and F. Celep. “Taxonomic Notes on <i>Sempervivum armenum</I> Boiss. & A. Huet (Crassulaceae) from Turkey With an Amended Description”. Bangladesh Journal of Botany, vol. 39, no. 1, July 2010, pp. 103-5, doi:10.3329/bjb.v39i1.5533.