@article{tyerman1995there,
  author = {Tyerman, Christopher J.},
  interhash = {a65b356230da5e058a3d1fd74983c7af},
  intrahash = {e6527e9caa80a8cb1ebfaaf0211f2cb6},
  journal = {The English Historical Review},
  pages = {553-577},
  title = {Were there any Crusades in the Twelfth Century?},
  volume = 110,
  year = 1995
}