@article{YuFrangakis2014,
  author    = {Zhou Yu and Achilleas S. Frangakis},
  title     = {M-free : scoring the reference bias in sub-tomogram averaging and template matching},
  journal   = {Journal of structural biology},
  volume    = {187},
  number    = {1},
  pages     = {10 -- 19},
  doi       = {10.1016/j.jsb.2014.05.007},
  year      = {2014},
}