Howell, Rodney R.Rodney R.HowellRosier, Louis E.Louis E.RosierHuynh, Dung T.Dung T.HuynhHSU-CHUN YEN2020-06-162020-06-161986https://scholars.lib.ntu.edu.tw/handle/123456789/502452Some Complexity Bounds for Problems Concerning Finite and 2-Dimensional Vector Addition Systems with States.journal article10.1016/0304-3975(86)90026-5https://doi.org/10.1016/0304-3975(86)90026-5