A Survey of Heavy Quark Theory for PDF Analyses
  We survey some of the recent developments in the extraction and application of heavy quark Parton Distribution Functions (PDFs). We also highlight some of the key HERA measurements which have contributed to these advances. 
K. Kovarik, T. Stavreva, A. Kusina, T. Jezo, F. I. Olness, I.   Schienbein, J. Y. Yu
hep-ph