119Sn NMR probe of magnetic fluctuations in SnO2 nanoparticlesTusharkanti Dey, P. Khuntia, A. V. Mahajan, Nitesh Kumar and A. SundaresanEPL, 96 6 (2011) 67008DOI: https://doi.org/10.1209/0295-5075/96/67008