Calle, C., Eichel, R.-A., Finazzo, C., Forrer, J., Granwehr, J., Gromov, I., Groth, W., Harmer, J., Kälin, M., Lammler, W., Liesum, L., Mádi, Z., Stoll, S., Van Doorslaer, S., & Schweiger, A. (2001). Electron Paramagnetic Resonance Spectroscopy. CHIMIA, 55(10), 763. https://doi.org/10.2533/chimia.2001.763