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HARVARD Citation
Agency,, N. (2018) NI Index of Production Methodological Note to explain differences in published series (from Q1 2014) due to moving from X-12 ARIMA to X-13 ARIMA SEATS for Seasonal Adjustment.. [Online]. Belfast : Northern Ireland Statistics & Research Agency. Available from: http://access.bl.uk/ark:/81055/vdc_100161393004.0x000001