Grohe07'

BibTeX

@article{DBLP:journals/jacm/Grohe07,
  author    = {Martin Grohe},
  title     = {The complexity of homomorphism and constraint satisfaction
               problems seen from the other side},
  journal   = {J. ACM},
  volume    = {54},
  number    = {1},
  year      = {2007},
  ee        = {http://doi.acm.org/10.1145/1206035.1206036},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}