Abundances and ADFs in PNe with WC central stars
  We present preliminary results obtained from the analysis of very deep echelle spectra of a dozen planetary nebulae with [WC] or weak emission lines (wels) central stars. The computed abundance discrepancy factors (ADFs) are moderate, with values lower than 4. In principle, no evidence of the H-poor metal enriched inclusions proposed by Liu et al. (2000) have been found. However, a detailed analysis of the data is in progress. 
Jorge Garc\'ia-Rojas (1), Miriam Pe\~na (2), Christophe Morisset (1,2)   and Maria Teresa Ruiz (3) ((1) IAC, Spain, (2) IA-U...
astro-ph.GA