Custers, J., Gegenwart, P., Wilhelm, H., Neumaier, K., Tokiwa, Y., Trovarelli, O., Geibel, C., Steglich, F., Pépin, C., & Coleman, P. (2003). The break-up of heavy electrons at a quantum critical point. Nature, 424(6948), 524-527. doi:10.1038/nature01774.