R. Hussmanns

Surveys of economically active population, employment, unemployment, and underemployment: An ILO manual on concepts and methods

F. Mehran, R. Hussmanns, V. Varma, 1992 .

Measuring the informal economy: from employment in the formal sector to informal employment

R. Hussmanns, Ralf. Hussmanns, 2004 .

ILO Compendium of official statistics on employment in the informal sector

R. Hussmanns, B. Jeu, 2002 .

International standards on the measurement of economic activity, employment, unemployment and underemployment

R. Hussmanns, 1995, Labour Statistics for a Market Economy.

Measurement of employment, unemployment and underemployment - Current international standards and issues in their application

R. Hussmanns, 1985 .