Andersson, Pernilla (contributor); … - 2004 - [Elektronische Ressource]
"When studying income differences and income distribution, the self-employed are often excluded from the population … studied. There are several good reasons for this, for example that incomes from self-employment are not reported to the same … extent as incomes from being an employee. On the other hand it is a problem to exclude the self-employed when studying income …