Estelle Bee Dagum

Estela Bee Dagum is an Argentine and Canadian economist and statistician who was a professor "chiara fama" of statistical sciences at the University of Bologna. She is known for her research on time series analysis, and in particular for developing the X-11-ARIMA method of seasonal adjustment, which became widely used and is a predecessor to X-12-ARIMA and later methods.
Dagum is the author of the books Benchmarking, Temporal Distribution, and Reconciliation Methods for Time Series and Seasonal Adjustment Methods and Real Time Trend-Cycle Estimation.