Time series approaches to testing market efficiency and nonlinearity for international financial markets. Yensen. Ni 10027/16578 https://indigo.uic.edu/articles/thesis/Time_series_approaches_to_testing_market_efficiency_and_nonlinearity_for_international_financial_markets_/10869728 Time series approaches to testing market efficiency and nonlinearity for international financial markets. 2014-03-18 00:00:00 Economics, Finance.