THIRD-SOUND PULSES IN DOUBLY CONNECTED SYSTEMS H.J. Verbeek, H. Van Beelen, R. De Bruyn Ouboter et K. W. TaconisJ. Phys. Colloques, 39 C6 (1978) C6-142-C6-143DOI: https://doi.org/10.1051/jphyscol:1978663