@misc{Gray:1953,
	key = "Gray 1953",
	author = "F. Gray",
	title = "Pulse code communication",
	note = "US Patent 2,632,058, March 17 1953 (filed November 13 1947)"}

@article{Kirschenhofer&Prodinger:1984,
	key = "Kirschenhofer and Prodinger 1984",
	author = "P. Kirschenhofer and H. Prodinger",
	title = "Subblock occurrences in positional number systems
and {Gray} code representation",
	journal = JIOS,
	volume = 5,
	year = 1984,
	pages = "29-42"}

@article{Larcher&Tichy:1988,
	key = "Larcher and Tichy 1988",
	author = "G. Larcher and R. F. Tichy",
	title = "Arithmetical properties of the standard {Gray-code}",
	journal = "{\"O}st. Akad. Wiss. Math.-natur. Kl., Sitzungsberichte",
	volume = 197,
	year = 1988,
	pages = "449-461"}

@article{Larcher&Tichy:1987,
	key = "Larcher and Tichy 1987",
	author = "G. Larcher and R. F. Tichy",
	title = "A note on {Gray} code and odd-even merge",
	journal = DAM,
	volume = 18,
	year = 1987,
	pages = "309-313"}

@article{GilbertE:1958,
	key = "E. Gilbert 1958",
	author = "E. N. Gilbert",
	title = "Gray codes and paths on the $n$-cube",
	journal = BSTJ,
	volume = 37,
	year = 1958,
	pages = "815-826"}

@article{Gardner:1972,
	key = "Gardner 1972",
	author = "M. Gardner",
	title = "Mathematical Games:  the curious properties of the {Gray}
code and how it can be used to solve puzzles",
	journal = SA,
	volume = 227,
	number = 2,
	month = "August",
	year = "1972",
	pages = "106-109"}

@article{Goddyn&Lawrence&Nemeth:1988,
	key = "Goddyn, Lawrence, and Nemeth 1988",
	author = "L. Goddyn and G. M. Lawrence and E. Nemeth",
	title = "Gray codes with optimized run lengths",
	journal = UM,
	volume = 34,
	year = 1988,
	pages = "179-192"}

@article{Arazi:1984,
	key = "Arazi 1984",
	author = "B. Arazi",
	title = "An approach for generating different types of {Gray} codes",
	journal = ICTRL,
	volume = 63,
	year = 1984,
	pages = "1-10"}

@techreport{Acharya:1992,
	key = "Acharya 1992",
	author = "A. Acharya",
	title = "Reflected number systems",
	institution = "School of Computer Science, Carnegie Mellon University",
	number = "CMU-CS-92-209",
	month = "November",
	year = 1992}

@article{Flajolet&Ramshaw:1980,
	key = "Flajolet and Ramshaw 1980",
	author = "P. Flajolet and L. Ramshaw",
	title = "A note on {Gray} code and odd-even merge",
	journal = SIAMJC,
	volume = 9,
	year = 1980,
	pages = "142-158"}