TY - JOUR TI - A novel hybrid approach to forecast mortality using generalized estimation equations and autoregressive integrated moving average models AU - ÖZALTIN, Ã. AU - İYİT, N. JO - Sigma Journal of Engineering and Natural Sciences PY - 2026 VL - 44 SP - 1970 EP - 1992 DO - 10.14744/sigma.2026.2076 ER -