An exact solution of the moving boundary problem for the relativistic plasma expansion in a dipole magnetic fieldH.B. Nersisyan, K.A. Sargsyan, D.A. Osipyan and H.H. MatevosyanEur. Phys. J. D, 66 7 (2012) 193DOI: https://doi.org/10.1140/epjd/e2012-30264-4