LAMMEL, Gerhard, Young-Sung GHIM, Amélie GRADOS, Heinrich HÜHNERFUSS, Hui-Wang GAO and Rainer LOHMANN. Levels of persistent organic pollutants in air in China and over the Yellow Sea.
Atmospheric Environment. Amsterdam: Elsevier, 2007, vol. 41, No 3, p. 452-464. ISSN 1352-2310.