Formal and informal work : the hidden work regime in Europe/ edited by Birgit Pfau-Effinger, Lluís Flaquer and Per H. Jensen. - New York : Routledge, c2009. - viii, 245 p. : ill. ; 24 cm. - Routledge advances in sociology, 46. . Includes index ISBN: 9780415964692 Subjects--Topical Terms: Arbeitsmarkt.Informal sector (Economics)--Europe.Labor--Europe.