Hviid, S. F. Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society;
Bertelsen, P., Goetz, W., Madsen, M. B., Kinch, K. M., Hviid, S. F., Knudsen, J. M., et al. (2004). Magnetic Properties Experiments on the Mars exploration Rover Spirit at Gusev crater. Science, 305(5685), 827-829. doi:10.1126/science.1100112.