Duffin, Richard James Extrapolating time series by discounted least squares Mathematics Technical Report Time-series analysis.;Least squares.;Smoothing (Numerical analysis);Extrapolation. 1966-01-01
    https://kilthub.cmu.edu/articles/journal_contribution/Extrapolating_time_series_by_discounted_least_squares/6477413
10.1184/R1/6477413.v1