Microwave surface resistance of pristine and neutron-irradiated MgB2 samples in magnetic fieldM. Bonura, A. Agliolo Gallitto, M. Li Vigni, C. Ferdeghini and C. TarantiniEur. Phys. J. B, 63 2 (2008) 165-177DOI: https://doi.org/10.1140/epjb/e2008-00231-9