TY - JOUR T1 - Measurements of the strong coupling constant and the QCD colour factors using four-jet observables from hadronic Z decays JO - The European Physical Journal C PY - 2003/01/01 AU - al. AHE ED - DO - DOI: 10.1140/epjc/s2002-01114-2 PB - Springer Science and Business Media LLC VL - 27 IS - 1 SP - 1 EP - 17 Y2 - 2024/12/23 ER -