@inproceedings{Wasa2012b, 
     address = "Sydney, Australia", 
     author = "Wasa, Kunihiro and Kaneta, Yusaku and Uno, Takeaki and Arimura, Hiroki", 
     booktitle = "COCOON 2012: the 18th Annual International Conference on Computing and Combinatorics", 
     doi = "10.1007/978-3-642-32241-9_30", 
     editor = "Gudmundsson, Joachim and Mestre, Juli\'{a}n and Viglas, Taso", 
     isbn = "978-3-642-32240-2", 
     link = "http://link.springer.com/chapter/10.1007/978-3-642-32241-9_30", 
     month = "aug", 
     pages = "347--359", 
     publisher = "Springer Berlin Heidelberg", 
     series = "Lecture Notes in Computer Science", 
     title = "Constant Time Enumeration of Bounded-Size Subtrees in Trees and Its Application", 
     uri = "http://link.springer.com/chapter/10.1007/978-3-642-32241-9_30", 
     volume = "7434", 
     year = "2012", 
}

Problems: 4