TY - JOUR AU - Ehrgott, Matthias AU - Holder, Al PY - 2008/07/21 Y2 - 2024/03/29 TI - Preface JF - Algorithmic Operations Research JA - AOR VL - 3 IS - 2 SE - DO - UR - https://journals.lib.unb.ca/index.php/AOR/article/view/9699 SP - AB - ER -