Radu, I., Vahaplar, K., Stamm, C., Kachel, T., Pontius, N., Dürr, H. A., Ostler, T. A., Barker, J., Evans, R. F., Chantrell, R. W., Tsukamoto, A., Itoh, A., Kirilyuk, A., Rasing, T., & Kimel, A. V. (2011). Transient ferromagnetic-like state mediating ultrafast reversal of antiferromagnetically coupled spins. Nature, 472(7342), 205-209. https://doi.org/10.1038/nature09901