[1]Fattash I, Voss B, Reski R, Hess WR, Frank W, BMC Plant Biol. 7:13(2007)., "Evidence for the rapid expansion of microRNA-mediated regulation in early land plant evolution"
[2]Axtell MJ, Snyder JA, Bartel DP, Plant Cell. 19:1750-1769(2007)., "Common functions for diverse small RNAs of land plants"