Free-energy landscapes of granular clusters grown by magnetic interactionJorge González-Gutiérrez, J. L. Carrillo-Estrada, O. Carvente and J. C. Ruiz-SuárezEur. Phys. J. E, 37 5 (2014) 37DOI: https://doi.org/10.1140/epje/i2014-14037-x