Issue No.02 - February (1978 vol.27)
M.J.E. Golay , Perkin-Elmer Corporation
A short list is given of two-dimensional line structures which are topologically identifiable one from the other.
topoglyphs., Hexagonal field, topological alphabet, topological different patterns
M.J.E. Golay, "Topoglyphs", IEEE Transactions on Computers, vol.27, no. 2, pp. 164-167, February 1978, doi:10.1109/TC.1978.1675051