Bose-Einstein transition in a dilute interacting gas G. Baym, J.-P. Blaizot, M. Holzmann, F. Laloë and D. Vautherin Eur. Phys. J. B, 24 1 (2001) 107-124 Published online: 15 November 2001 DOI: 10.1007/s100510170028