THE UTILIZATION OF FILAMENTARY Nb3Sn SUPERCONDUCTOR IN THE PRODUCTION OF A 15 TESLA SOLENOID OPERATING AT 4.2K N. Killoran et N.W. Kerley J. Phys. Colloques, 45 C1 (1984) C1-87-C1-91 DOI: 10.1051/jphyscol:1984119