"reliable research" — Kollokationen-Wörterbuch Englisch

reliable research Kollokation
Automatische Übersetzung (wir garantieren seine Korrektheit nicht): niezawodne badania
  1. reliable Adjektiv + research Substantiv
    Schwache Kollokation

    From that point, there is no further information on him and no reliable research in terms of the date of his death.