Jérôme Leroux, Vincent Penelle, Grégoire Sutre. On the Context-Freeness Problem for Vector Addition Systems. In 28th Annual ACM/IEEE Symposium on Logic in Computer Science, LICS 2013, New Orleans, LA, USA, June 25-28, 2013. pages 43-52, IEEE Computer Society, 2013. [doi]
Abstract is missing.