Maize-targeted mutagenesis: A knock-out resource for maize. - May,B..P..; Liu,H..; Vollbrecht,E..; Senior,L..; Rabinowicz,P..D..; Roh,D..; Pan,X..K..; Stein,L..; Freeling,M..; Alexander,D..; Martienssen,R.. (Proceedings of the National Academy of Sciences of the USA, 2003)