@inproceedings{harrison98model,
  author       = {John Harrison},
  title        = {Formalizing Basic First Order Model Theory},
  booktitle    = {TPHOLs},
  series       = {Lecture Notes in Computer Science},
  volume       = {1479},
  pages        = {153--170},
  publisher    = {Springer},
  year         = {1998}
}