The Nature of the faint far-infrared extragalactic source population:   Optical/NIR and radio follow-up observations of ISOPHOT deep-field sources   using Keck, Subaru, and VLA telescopes
  We report on optical and near-infrared (NIR) follow-up spectroscopy of faint far-infrared (FIR) sources found in our deep FIR survey by Kawara et al. 
Yuko Kakazu, D. B. Sanders, R. D. Joseph, L. L. Cowie (IfA, Univ of   Hawaii), T. Murayama, Y. Taniguchi (Tohoku Univ), S. V...