TY - JOUR A1 - Shang, H. A1 - Smith, P.W.F. A1 - Bijak, J. A1 - Wiśniowski, A. T1 - A multilevel functional data method for forecasting population: With an application to the United Kingdom Y1 - 2016 DO - 10.1016/j.ijforecast.2015.10.002 VL - 32 IS - 3 ER -