STUDIES OF THE SUPERFLUID DENSITY AND ONSET OF SUPERFLUIDITY IN 4He II IN FINE REGULAR PORES USING A HELMHOLTZ RESONATOR J. S. Brooks, B. B. Sabo, P. C. Schubert, W. Zimmermann et JrJ. Phys. Colloques, 39 C6 (1978) C6-347-C6-348DOI: https://doi.org/10.1051/jphyscol:19786154