SMALL CLUSTERS OF PURE AND ADMIXED H↑, 3He↑, T↑, AND 4He ATOMS T.K. Lim, S. Nakaichi, Y. Akaishi et H. Tanaka J. Phys. Colloques, 41 C7 (1980) C7-189-C7-190 DOI: 10.1051/jphyscol:1980731