"vital reference" — Diccionario de colocaciones de inglés

vital reference colocación
Automatic translation (No garantizamos su exactitud.): istotne odniesienie
  1. vital adjetivo + reference sustantivo
    Muy relajada/ suelta colocación

    And, yes, the English experience is a vital reference for the South American authorities in their own attempts to deal with football violence - lots of legislative examples have beenn looked at, and a recent operation in Brazil went by the name of Operation Hooligans.