Model of Discharge Lamp Sodium With High Pressure

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

@booklet{EasyChair:1826,
  author    = {Larab Moulay and Farid Miloua and Ayad Ahmed Nour El Islam},
  title     = {Model of Discharge Lamp Sodium With High Pressure},
  howpublished = {EasyChair Preprint 1826},
  year      = {EasyChair, 2019}}