TY - JOUR TI - Estimating Time Varying Risk Premia in the Term Structure: The Arch-M Model AU - Robert F. Engle AU - David M. Lilien AU - Russell P. Robins JO - Econometrica PY - 1987 VL - 55 IS - 2 DO - 10.2307/1913242 UR - https://doi.org/10.2307/1913242 ER -