@article{Agrawal:1974a,
	key = "Agrawal 1974a",
	author = "D. P. Agrawal",
	title = "Negabinary carry-look-ahead adder and fast multiplier",
	journal = ELETT,
	volume = 10,
	year = "{\noopsort{1974a}}1974",
	pages = "312-313",
	note = "Corrigendum, {\bf 10} (1974), 468"}

@article{Agrawal:1974b,
	key = "Agrawal 1974b",
	author = "D. P. Agrawal",
	title = "Negabinary complex-number multiplier",
	journal = ELETT,
	volume = 10,
	year = "{\noopsort{1974b}}1974",
	pages = "502-503"}

@article{Houselander:1974,
	key = "Houselander 1974",
	author = "L. S. Houselander",
	title = "Cellular-array negabinary multiplier",
	journal = ELETT,
	volume = 10,
	year = 1974,
	pages = "168-169"}

@article{Sankar&Chakrabarti&Krishnamurthy:1973a,
	key = "Sankar, Chakrabarti, and Krishnamurthy 1973a",
	author = "P. V. Sankar and S. Chakrabarti and E. V. Krishnamurthy",
	title = "Arithmetic algorithms in a negative base",
	journal = IEEE-TC,
	volume = "C-22",
	year = "{\noopsort{1973a}}1973",
	pages = "120-125"}

@article{Sankar&Chakrabarti&Krishnamurthy:1973b,
	key = "Sankar, Chakrabarti, and Krishnamurthy 1973b",
	author = "P. V. Sankar and S. Chakrabarti and E. V. Krishnamurthy",
	title = "Deterministic division algorithm in a negative base",
	journal = IEEE-TC,
	volume = "C-22",
	year = "{\noopsort{1973b}}1973",
	pages = "125-128"}

@article{Kanani&OKeefe:1973,
	key = "Kanani and O'Keefe 1973",
	author = "D. V. Kanani and K. H. O'Keefe",
	title = "A note on conditional-sum addition for base $-2$ systems",
	journal = IEEE-TC,
	volume = "C-22",
	year = 1973,
	pages = "626"}

@article{Dietmeyer:1963,
	key = "Dietmeyer 1963",
	author = "D. L. Dietmeyer",
	title = "Conversion from positive to negative and imaginary radix",
	journal = IEEE-EC,
	volume = 12,
	year = 1963,
	pages = "20-22"}

@article{Gardner:1973,
	key = "Gardner 1973",
	author = "M. Gardner",
	title = "How to turn a chessboard into a computer and to calculate
with negabinary numbers",
	journal = SA,
	volume = 228,
	number = 4,
	month = "April",
	year = 1973,
	pages = "106-111"}

@article{Agrawal:1975a,
	key = "Agrawal 1975a",
	author = "D. P. Agrawal",
	title = "Negabinary parallel counters",
	journal = DP,
	volume = 1,
	year = "{\noopsort{1975a}}1975",
	pages = "75-85",
	comment = "checked"}

@article{Agrawal:1975b,
	key = "Agrawal 1975b",
	author = "D. P. Agrawal",
	title = "On negabinary division and square-rooting",
	journal = DP,
	volume = 1,
	year = "{\noopsort{1975b}}1975",
	pages = "267-275",
	comment = "checked"}

@article{Agrawal:1975c,
	key = "Agrawal 1975c",
	author = "D. P. Agrawal",
	title = "Arithmetic algorithms in a negative base",
	journal = IEEE-TC,
	volume = "C-24",
	year = "{\noopsort{1975c}}1975",
	pages = "998-1000",
	comment = "checked"}

@article{Agrawal:1977,
	key = "Agrawal 1977",
	author = "D. P. Agrawal",
	title = "Comments on ``{A} note on base $-2$ arithmetic logic''",
	journal = IEEE-TC,
	volume = "C-26",
	year = 1977,
	pages = "511",
	comment = "checked"}

@article{Yuen:1975,
	key = "Yuen 1975",
	author = "C. K. Yuen",
	title = "A note on base $-2$ arithmetic logic",
	journal = IEEE-TC,
	volume = "C-24",
	year = 1975,
	pages = "325-329"}

@article{RaoG&Rao&Krishnamurthy:1974,
	key = "G. Rao, Rao, and Krishnamurthy 1974",
	author = "G. S. Rao and M. N. Rao and E. V. Krishnamurthy",
	title = "Logical design of a negative binary adder-subtracter",
	journal = IJE,
	volume = 36,
	year = 1974,
	pages = "537-542"}

@article{Colson:1726,
	key = "Colson 1726",
	author = "J. Colson",
	title = "A short account of negativo-affirmative arithmetick",
	journal = PHT,
	volume = 34,
	number = 396,
	year = 1726,
	pages = "161-173"}

@article{Zohar:1970,
	key = "Zohar 1970",
	author = "S. Zohar",
	title = "Negative radix conversion",
	journal = IEEE-TC,
	volume = "C-19",
	year = 1970,
	pages = "222-226",
	note = "See comments by Wadel, Pawlak, and Zohar
in {\bf C-20} (1971), 587"}

@article{Pawlak:1959,
	key = "Pawlak 1959",
        author = "Z. Pawlak",
        title = {An electronic digital computer based on the ``{$-2$}'' system},
        journal = "Bull. Acad. Polon. Sci. {S\'er.} Sci. Tech.",
        volume = 7,
        year = 1959,
        pages = "713-721"}

@article{Pawlak:1960,
	key = "Pawlak 1960",
        author = "Z. Pawlak",
        title = {The organization of a digital digital computer based on the ``{$-2$}'' system},
        journal = "Bull. Acad. Polon. Sci. {S\'er.} Sci. Tech.",
        volume = 8,
        year = 1960,
        pages = "253-258"}

@article{Penney:1964,
	key = "Penney 1964",
	author = "W. Penney",
	title = "A numeral system with a negative base",
	journal = "Math. Student Journal",
	volume = 11,
	number = 4,
	year = 1964,
	month = "May",
	pages = "1-2",
	comment = "Note this journal is NOT the same as the Indian
	journal called `Mathematics Student'"}

@article{Murugesan:1977,
	key = "Murugesan 1977",
	author = "S. Murugesan",
	title = "Negabinary arithmetic circuits using binary arithmetic",
	journal = IEE-ECS,
	volume = 1,
	number = 2,
	year = 1977,
	pages = "77-78"}

@techreport{Frougny:1996b,
	key = "Frougny 1996b",
	author = "C. Frougny",
	title = "Addition in negative base and some related 
complex number systems",
	institution = "Laboratoire Informatique {Th\'eorique} et Programmation,
Institut Blaise Pascal",
	month = "October",
	year = "{\noopsort{1996b}}1996",
	number = "LITP 96/32"}

@article{Grabner&Thuswaldner:2000,
	key = "Grabner and Thuswaldner 2000",
	author = "P. J. Grabner and J. M. Thuswaldner",
	title = "On the sum of digits function for number systems with
negative bases",
	journal = RJ,
	volume = 4,
	year = 2000,
	pages = "201-220"}