B. J. Ramshaw, Sebastian, S. E., McDonald, R. D., Day, J., Tan, B. S., Zhu, Z., Betts, J. B., Liang, R., Bonn, D. A., Hardy, W. N., and Harrison, N.,
“Quasiparticle mass enhancement approaching optimal doping in a high-Tc superconductor”,
Science, vol. 348, no. 6232, p. 317, 2015.