Bibtex of Hypergraph / Acyclic subhypergraph

@inproceedings{Daigo2009, 
     address = "\v{S}pindlerův Ml\'{y}n, Czech Republic", 
     author = "Daigo, Taishin and Hirata, Kouichi", 
     booktitle = "SOFSEM 2009: the 35th Conference on Current Trends in Theory and Practice of Computer Science", 
     doi = "10.1007/978-3-540-95891-8_19", 
     editor = "Nielsen, Mogens and Ku\v{c}era, Anton\'{\i}n and Miltersen, Peter Bro and Palamidessi, Catuscia and Tůma, Petr and Valencia, Frank", 
     link = "http://link.springer.com/chapter/10.1007/978-3-540-95891-8_19", 
     month = "jan", 
     pages = "181--192", 
     publisher = "Springer Berlin Heidelberg", 
     series = "Lecture Notes in Computer Science", 
     title = "On Generating All Maximal Acyclic Subhypergraphs with Polynomial Delay", 
     uri = "http://link.springer.com/chapter/10.1007/978-3-540-95891-8_19", 
     volume = "5404", 
     year = "2009", 
}

@inproceedings{Wasa2013, 
     address = "Singapore", 
     author = "Wasa, Kunihiro and Uno, Takeaki and Hirata, Kouichi and Arimura, Hiroki", 
     booktitle = "DS 2013: the 16th International Conference on Discovery Science", 
     doi = "10.1007/978-3-642-40897-7_21", 
     editor = "F\"{u}rnkranz, Johannes and H\"{u}llermeier, Eyke and Higuchi, Tomoyuki", 
     isbn = "9783642408960", 
     issn = "16113349", 
     link = "http://link.springer.com/chapter/10.1007/978-3-642-40897-7_21", 
     month = "oct", 
     pages = "308--323", 
     publisher = "Springer Berlin Heidelberg", 
     series = "Lecture Notes in Computer Science", 
     title = "Polynomial delay and space discovery of connected and acyclic sub-hypergraphs in a hypergraph", 
     uri = "http://link.springer.com/chapter/10.1007/978-3-642-40897-7_21", 
     volume = "8140", 
     year = "2013", 
}