1. Anonymous (2012) Monthly Stat Bull 9: pp. 94, National Institute of Statistics, Bucharest, Romania, http://www.insse.ro/cms/files/arhiva_buletine2012/bsl_9.pdf (last accessed 10.01.2013)
2. Giosan L, Bokuniewicz H, Panin N, Postolache I (1993) Longshore sediment transport pattern along Romanian Danube delta coast, Geo-Eco-Marina 2:11-23; http://www.geoecomar.ro/website/publicatii/Nr.2-1997/2.GiosanL.pdf (last accessed 10.01.2013)
3. UNECE (2007) Our Waters: joining hands across borderd: first assessment of transboundary rivers, lakes and groundwaters, convention on the protection and use of transboundary watercourses and international lakes, United Nations, New York, http://www.unece.org/fileadmin/DAM/env/water/blanks/assessment/black.pdf (last accessed 10.01.2013)
4. PRIS (2012) power reactor information system, international atomic energy agency, Vienna; http://www.iaea.org/pris/ (Last accessed 10.01.2013)
5. OECD Chernobyl (2003) Assessment of Radiological and Health Impacts OECD Papers 3:3-155, OECD Publications, 2, rue Andr-Pascal, 75775 Paris Cedex 16 ; http://caliban.sourceoecd.org/vl=99967460/cl=11/nw=1/rpsv/cgi-bin/fulltextew.pl?prpsv=/ij/oecdjournals/16091914/v3n1/s1/p1l.idx (last accessed 10.01.2013)