@book{76,
	author = {Rutgaizer, Valeriy M. and Treml, V.G.},
	title = {The Shadow Economy in the USSR - 1: A Survey of Soviet  Research; 2: Sizing Up the Shadow Economy (Review and  Analysis of Soviet Estimates},
	publisher = {WEFA Group,},
	year = {1992.},
	series = {Berkeley-Duke Occasional Papers on the Second Economy},
	address = {Berkeley, Durham :}
}