@inproceedings{Bagan2007a, 
     address = "Lausanne, Switzerland", 
     author = "Bagan, Guillaume and Durand, Arnaud and Grandjean, Etienne", 
     booktitle = "CSL 2007: the 21st International Workshop on Computer Science Logic", 
     doi = "10.1007/978-3-540-74915-8_18", 
     editor = "Duparc, Jacques and Henzinger, Thomas A.", 
     isbn = "978-3-540-23024-3", 
     issn = "0302-9743", 
     link = "http://link.springer.com/chapter/10.1007/978-3-540-74915-8_18", 
     month = "sep", 
     pages = "208--222", 
     publisher = "Springer Berlin Heidelberg", 
     series = "Lecture Notes in Computer Science", 
     title = "On Acyclic Conjunctive Queries and Constant Delay Enumeration", 
     uri = "http://link.springer.com/chapter/10.1007/978-3-540-74915-8_18", 
     volume = "4646", 
     year = "2007", 
}

Problems: 259