TY - JOUR TI - Autoregressive Conditional Duration: A New Model for Irregularly Spaced Transaction Data AU - Robert F. Engle AU - Jeffrey R. Russell JO - Econometrica PY - 1998 VL - 66 IS - 5 DO - 10.2307/2999632 UR - https://doi.org/10.2307/2999632 ER -