Co-production in public services: does involving citizens attenuate the effect of environmental turbulence on public service performance?

BibTeX does not have the right entry for preprints. This is a hack for producing the correct reference:

@booklet{EasyChair:1131,
  author    = {Petra van den Bekerom},
  title     = {Co-production in public services: does involving citizens attenuate the effect of environmental turbulence on public service performance?},
  howpublished = {EasyChair Preprint 1131},
  year      = {EasyChair, 2019}}