(2001), pp. 690-700.
(1986), pp. 555-560.
Educational Studies in Mathematics, Vol. 60, No. 2. (October 2005), pp. 149-172.
Journal of Mathematical Behavior, Vol. 22, No. 4. (2003), pp. 479-495.
(23 April 2003)
The American Mathematical Monthly, Vol. 101, No. 9. (1994), pp. 855-857.
The Two-Year College Mathematics Journal, Vol. 1, No. 1. (1970), pp. 32-35.
The College Mathematics Journal, Vol. 27, No. 1. (1996), pp. 49-54.
(23 April 1998)
(2000)
(1998), pp. 122-138.
(2004), pp. 167-178.
(2003)
No. -86. (1989)
(1995)
(1993), pp. 203-246.
(15 June 1999)
(1997), pp. 36-47.
The American Mathematical Monthly, Vol. 89, No. 3. (1982), pp. 180-198.
(02 March 1971)
Journal of Logic Programming, Vol. 31, No. 1-3. (1997), pp. 39-58.
(21 June 2004)
(2003)
(2001)
Vol. 953 (1995), pp. 159-179.
(2000)
pp. 181-222.
(2001), pp. 9-18.
(1 Dec 2003)
(2001), pp. 136-153.
(1997)
System Sciences, 1993, Proceeding of the Twenty-Sixth Hawaii International Conference on, Vol. iii (1993), pp. 434-444 vol.3.
Higher-Order and Symbolic Computation, Vol. 20, No. 3. (2007), pp. 237-255.
(2000), pp. 149-202.
(2007), pp. 54-65.
Czechoslovak Journal of Physics, Vol. 55, No. 6. (June 2005), pp. 633-642.
IEEE Transactions on Signal Processing, Vol. 56, No. 2. (February 2008), pp. 576-587.
(1999)
(13 April 1998)
(1997)
(2002)
(22 December 2004)
(01 January 1989)
(1999), pp. 147-160.