DAVID, Petr. Aspects of the value added tax within the self assessment system and the extended guarantees for the provision of services in the countries of the European Union. In Agricultural economics. - Prague : Institute of Agricultural and Food Information, 2009. ISSN 0139-570X, 2009, vol. 55, no. 7, s. 335-346. Dostupné na : <http://www.agriculturejournals.cz/publicFiles/09028.pdf>