Owyang, Michael T.
, Piger, Jeremy M.
, Wheeler, Christopher H.
and Wall, Howard J. "The Economic Performance of Cities: A Markov-Switching Approach, Working Paper 2006-056C,"
Working Papers (Federal Reserve Bank of St. Louis)
(Revised December 2007).
https://fraser.stlouisfed.org/title/9029/item/716382, accessed on September 9, 2026.