Flux-closure-domain states and demagnetizing energy determination in sub-micron size magnetic dotsP.-O. Jubert, J.-C. Toussaint, O. Fruchart, C. Meyer and Y. SamsonEurophys. Lett., 63 1 (2003) 132-138DOI: https://doi.org/10.1209/epl/i2003-00488-0