are referenced by the unsolved problem of the week.

Especially rich are [Croft 1991], [Guy 1994] and [Klee 1991].

- [Beiler 1966]
- Albert H. Beiler, Recreations in the Theory of Numbers: The Queen of Mathematics Entertain. 2nd edition. Dover. New York: 1966.
- [Bondy 1976]
- J. A. Bondy and U. S. R. Murty, Graph Theory with Applications. North Holland. New York: 1976.
- [Boroczky 1987]
- K. Böröczky and G. Fejes Tóth, Intuitive Geometry. North-Holland Publishing Company. New York: 1987.
- [Croft 1991]
- Hallard T. Croft, Kenneth J. Falconer, and Richard K. Guy, Unsolved Problems in Geometry. Springer-Verlag. New York: 1991.
- [Dudeney 1970]
- H. E. Dudeney, Amusements in Mathematics. Dover. New York: 1970.
- [Dunham 1990]
- William Dunham, Journey Through Genius: The Great Theorems of Mathematics. John Wiley and Sons. New York: 1990.
- [Erdos 1980]
- Paul Erdös and Ronald L. Graham, Old and New Problems and Results in Combinatorial Number Theory. L'Enseignement Mathématique. Geneva, Switzerland: 1980.
- [Gardner 1978]
- Martin Gardner, Mathematical Magic Show. Vintage Books. New York: 1978.
- [Gardner 1983]
- Martin Gardner, Wheels, Life, and Other Mathematical Amusements. W. H. Freeman. New York: 1983.
- [Gardner 1986]
- Martin Gardner, Knotted Doughnuts and other Mathematical Entertainments. W. H. Freeman. New York: 1986.
- [Graham 1989]
- Ronald L. Graham, Donald E. Knuth, and Oren Patashnik, Concrete Mathematics: A Foundation for Computer Science. Addison-Wesley Publishing Company. Reading, MA: 1989.
- [Guy 1994]
- Richard K. Guy, Unsolved Problems in Number Theory, second edition. Springer Verlag. New York: 1994.
- [Hammer 1978]
- J. Hammer, Unsolved Problems Concerning Lattice Points. Pitman. London: 1978.
- [Klee 1991]
- Victor Klee and Stan Wagon, Old and New Unsolved Problems in Plane Geometry and Number Theory. Mathematical Association of America. Washington, DC: 1991.
- [Lay 1982]
- Steven R. Lay, Convex Sets and their Applications. John Wiley and Sons. New York: 1982.
- [Mauldin 1981]
- R. Daniel Mauldin, The Scottish Book: Mathematics from the Scottish Café. Birkhäuser. Boston: 1981.
- [Meschkowski 1966]
- Herbert Meschkowski, Unsolved and Unsolvable Problems in Geometry. Frederick Ungar Publishing Co. New York: 1966.
- [Ogilvy 1972]
- C. Stanley Ogilvy, Tomorrow's Math: Unsolved Problems for the Amateur. 2nd edition. Oxford University Press. New York: 1972.
- [Ogilvy 1988]
- C. Stanley Ogilvy and John T. Anderson, Excursions in Number Theory. Dover. New York: 1988.
- [Rademacher 1957]
- Hans Rademacher and Otto Toeplitz, The Enjoyment of Mathematics. Princeton University Press. New Jersey: 1957.
- [Ribenboim 1988]
- Paulo Ribenboim, The Book of Prime Number Records. Springer-Verlag. New York: 1988.
- [Ribenboim 1994]
- Paulo Ribenboim, Catalin's Conjecture. Academic Press. Boston: 1994.
- [Robbins 1993]
- Neville Robbins, Beginning Number Theory. Wm. C. Brown Publishers. Dubuque, Iowa: 1993. Appendix A.
- [Shanks 1985]
- Daniel Shanks, Solved and Unsolved Problems in Number Theory. Chelsea Publishing Company. New York: 1985.
- [Sierpinski 1964]
- Waclaw Sierpinski, A Selection of Problems in the Theory of Numbers. Pergamon Press. New York: 1964.

This page is maintained by MathPro Press (bibliographer@MathPro.com).

Last modified July 6, 1995.