Sundermann, M., Yavaş, H., Chen, K., Kim, D. J., Fisk, Z., Kasinathan, D., et al. (2018). 4f Crystal Field Ground State of the Strongly Correlated Topological Insulator SmB6. Physical Review Letters, 120: 016402, pp. 1-6. doi:10.1103/PhysRevLett.120.016402.