Rationality of Moduli Spaces via Invariant Theory

@inproceedings{ShepherdBarron1989RationalityOM,
  title={Rationality of Moduli Spaces via Invariant Theory},
  author={Nicholas Shepherd-Barron},
  year={1989}
}
The aim of this paper is to convey some idea, by means of concrete examples, of what it means for a moduli space in algebraic geometry to be rational, and of what this question has to do with group theory.