@inproceedings{PEPM-2011-IkedaN,
	author        = "Yuta Ikeda and Susumu Nishimura",
	booktitle     = "{Proceedings of the 16th Workshop on Partial Evaluation and Program Manipulation}",
	doi           = "10.1145/1929501.1929521",
	isbn          = "978-1-4503-0485-6",
	pages         = "101--110",
	publisher     = "{ACM}",
	title         = "{Calculating tree navigation with symmetric relational zipper}",
	year          = 2011,
}