LOCAL TRICRITICAL BEHAVIOUR IN 3He - 4He MIXTURES FILMS J. P. Laheurte, J. P. Romagnan, A. Gilabert et J. C. NoirayJ. Phys. Colloques, 39 C6 (1978) C6-349-C6-350DOI: https://doi.org/10.1051/jphyscol:19786155