NEW MULTIFILAMENTARY SUPERCONDUCTING WIRES WITH FILAMENT OF Nb3Sn IN SITU WIRES F. Sumiyoshi, K. Funaki, Y. Akenaga, J. Chikaba, N. Mori and K. Yamafuji J. Phys. Colloques, 45 C1 (1984) C1-383-C1-386 DOI: 10.1051/jphyscol:1984177