?url_ver=Z39.88-2004&rft_id=10.1007%2Fs10640-020-00504-2&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Gollier&rft.aufirst=Christian&rft.issue=n%C2%B0+4&rft.volume=vol.+76&rft.date=August+2020&rft.issn=0924-6460&rft.atitle=If+the+objective+is+herd+immunity%2C+on+whom+should+it+be+built%3F&rft.title=Environmental+and+Resource+Economics&rft.pages=671-683&rft.genre=article