Boson-Fermion Model of High-T_C Superconductivity ----A Progress Report
  This is an invited lecture at the XXII International School of Theoretical Physics, Ustron, Poland, 9/10-9/15, 1998. The boson-fermion model of high T_C superconductivity is reviewed. Its applications to the pseudo-gap and DC transport coefficients are discussed. 
Hai-cang Ren