A Certain Level of Abstraction

@Conference{digra311, title ="A Certain Level of Abstraction", year = "2007", author = "Juul, Jesper", publisher = "DiGRA", address = "Tampere", howpublished = "\url{https://dl.digra.org/index.php/dl/article/view/311}", booktitle = "Proceedings of DiGRA 2007 Conference: Situated Play"}