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The spatial distribution of informal marketplaces and informal foreign traders in contemporary Hungary
Sik, Endre, (1999)
Repenser les migrations économiques : un défi pour l'Europe
Burchianti, Flora, (2010)
The shadow economy in German regions : an empirical assessment
Bühn, Andreas, (2012)
Informal employment in the advanced economies : implications for work and welfare
Williams, Colin C., (1998)
The implications for the informal sector of European Union integration
Windebank, Jan, (1995)
Paid informal work : a barrier to social inclusion?
Williams, Colin C., (2001)