1. See The “2so + 1” Realization page 284 of this paper.
2. Contrast this procedure with that in The Tables of Combinations and the Final Circuit, Part I of this paper, page 180.
3. so was defined in On the Number of Secondary Relays Required, this paper, page 275.
4. Synthesis of Electronic Computing and Control Circuits;Staff of the Computation Laboratory,1951
5. See On the Number of Secondary Relays Required, page 275 of this paper.