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Lee WK, Tokuoka T, Heo K. Molecular evidence for the inclusion of the Korean endemic genus " Echinosophora" in Sophora (Fabaceae), and embryological features of the genus. Journal of Plant Research. 2004, 117 (3): 209–19. PMID 15221584. doi:10.1007/s10265-004-0150-x.
