Sloan Digital Sky Survey Quasars in the SWIRE ELAIS N1 Field: Properties   and Spectral Energy Distributions
  We present a mid-infrared analysis of 35 quasars with spectroscopic redshifts selected from the Spitzer Wide-area InfraRed Extragalactic Survey (SWIRE). We discuss their optical and mid-infrared (MIR) colors, and show that these quasars occupy well defined regions in MIR color-color space. We examine the issue of type-I AGN candidate selection in detail and propose new selection methods based on mid-IR colors. The available multi-band data allows us to construct two new, well-sampled quasar templates, covering wavelengths from the ultraviolet to the MIR. 
E. Hatziminaoglou, I. Perez-Fournon, M. Polletta, A. Afonso-Luis, A.   Hernan-Caballero, F.M. Montenegro-Montes, C. Lonsdale...