Upper critical field in : Magnetotransport vs. magnetotunnelingP. Samuely, P. Szabó, T. Klein, A. G. M. Jansen, J. Marcus, C. Escribe-Filippini and P. WyderEurophys. Lett., 41 2 (1998) 207-212DOI: https://doi.org/10.1209/epl/i1998-00132-1