Simon, H. A. & Ando, A. (1961). Econometrica 29(2):111–138. doi:10.2307/1909285.
Not read. The summary is drawn from the abstract or from what the work is standardly cited for. A reading should check it first.
Why this is here
A8 of the exchange of 2026-10-16, as the source of the timescale side of near-decomposability behind CLAIM-331. The record holds the 1962 essay (LIT-905, read); this is the theorem.