Forslund (1995). Forslund, Robert R. (1995), "A logical alternative to the existing positional number system", Southwest Journal of Pure and Applied Mathematics, 1: 27–29, MR1386376, S2CID19010664.
Forslund (1995). Forslund, Robert R. (1995), "A logical alternative to the existing positional number system", Southwest Journal of Pure and Applied Mathematics, 1: 27–29, MR1386376, S2CID19010664.