@ARTICLE{Skarbe89,
AUTHOR = "Skarbek W., Agui T., Nakajima M.",
TITLE = "Software Tools for Hilbert Scan of Large Images",
JOURNAL = "Trans. IEICE, Institute of Electronics, Information, and Communication Enginneers",
NUMBER = "5",
PAGES = "561-564",
VOLUME = "E72",
YEAR = "1989",
}