Zaikina, J. V., Schnelle, W., Kovnir, K. A., Olenev, A. V., Grin, Y., & Shevelkov, A. V. (2007). Crystal structure, thermoelectric and magnetic properties of the type-I clathrate solid solutions Sn24P19.3(2)BrxI8-x (0 ≤ X ≤ 8) and Sn24P19.3(2)ClyI8-y (y ≤ 0.8). Solid State Sciences, 9, 664-671. doi:10.1016/j.solidstatesciences.2007.05.008.