Spin dynamics in hole-doped two-dimensional S = 1/2 Heisenberg antiferromagnets: 63Cu NQR relaxation in La2-xSrxCuO4 for x≤0.004P. Carretta, F. Tedoldi, A. Rigamonti, F. Galli, F. Borsa, J. H. Cho and D. C. JohnstonEur. Phys. J. B, 10 2 (1999) 233-236DOI: https://doi.org/10.1007/s100510050850