Park N, Yeo U, Lee J, Park D, Lee J, Cho J, Song Y, Oh S, Son Y, Chang J.  Breeding of a Rice Variety, ‘Sangbo’, with High Head Rice Grain Ratio and Good Ripened Grain Color.  Korean J. Breed. Sci. 2020;52:441-447.  https://doi.org/10.9787/KJBS.2020.52.4.441