@inproceedings{JCDL-2009-BolelliEZG,
	author        = "Levent Bolelli and Seyda Ertekin and Ding Zhou and C. Lee Giles",
	booktitle     = "{Proceedings of the Ninth Joint Conference on Digital Libraries}",
	doi           = "10.1145/1555400.1555411",
	isbn          = "978-1-60558-322-8",
	pages         = "69--72",
	publisher     = "{ACM}",
	title         = "{Finding topic trends in digital libraries}",
	year          = 2009,
}