Production of a Bose Einstein condensate of metastable helium atomsF. Pereira Dos Santos, J. Léonard, Junmin Wang, C. J. Barrelet, F. Perales, E. Rasel, C. S. Unnikrishnan, M. Leduc and C. Cohen-TannoudjiEur. Phys. J. D, 19 1 (2002) 103-109DOI: https://doi.org/10.1140/epjd/e20020061