George H. L. Fletcher, Jan Hidders, Stijn Vansummeren, Yongming Luo, François Picalausa, Paul De Bra. On guarded simulations and acyclic first-order languages. In Database Programming Languages - DBPL 201, 13th International Symposium, Seattle, Washington, USA, August 29, 2011. Proceedings. 2011. [doi]
Abstract is missing.