Citation: Kim, Kang-Woo; Kim, Hyoungjoong (2018). Crystal structure of semiconducting potassium poly[(\m2-tetraselenido-\k2 Se 1:Se 4)(\m2-pentaselenido-\k1 Se 1:Se 1)argentate(I)], K3AgSe9. Zeitschrift f\"ur Kristallographie - New Crystal Structures, 233, pp. 719-720.