Kapazoglou A, Tondelli A, Papaefthimiou D, Ampatzidou H, Francia E, Stanca MA, Bladenopoulos K, Tsaftaris AS: Epigenetic chromatin modifiers in barley: IV. The study of barley polycomb group (PcG) genes during seed development and in response to external ABA. BMC Plant Biol. 2010 Apr 21;10:73. PubMed PMID: 20409301. doi: http://dx.doi.org/10.1186/1471-2229-10-73