Glamazda, A., Lemmens, P., Do, ,S.-H., & Choi, K.-Y. (2017). Comparative Raman scattering study of Ba₃MSb₂O₉ (M=Zn, Co and Cu). ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, 43(5), 683–691. https://doi.org/10.1063/1.4985205