Magnetisation of isolated single crystalline Fe-nanoparticles measured by a ballistic Hall micro-magnetometerL. Theil Kuhn, A. K. Geim, J. G.S. Lok, P. Hedegård, K. Ylänen, J. B. Jensen, E. Johnson and P. E. LindelofEur. Phys. J. D, 10 2 (2000) 259-263DOI: https://doi.org/10.1007/s100530050547