@inproceedings{CASE-2011-NishiYI,
	author        = "Tatsushi Nishi and Sisi Yin and Tsukasa Izuno",
	booktitle     = "{Proceedings of the Seventh International Conference on Automation Science and Engineering}",
	doi           = "10.1109/CASE.2011.6042414",
	isbn          = "978-1-4577-1730-7",
	pages         = "468--473",
	publisher     = "{IEEE}",
	title         = "{Column generation approach to ship scheduling problems for international crude oil transportation}",
	year          = 2011,
}