@book { Attentionfragile, title = "Attention, fragile !", subtitle = "Economie et politique de la messagerie postale en France, XIXe-XXe siècle", author = "Léonard {Laborie} and Sébastien {Richez}", year = "2020", publisher = "Peter Lang Verlag", address = "Bruxelles, Belgium", doi = "10.3726/b16576", url = "https://www.peterlang.com/document/1055769" }