Part,  Chapter, Paragraph
1  III,    10.  4.  2| products (Caliebe et al, 2006) Perfluorobutane sulfonate (PFBS) is used
2  Key,   Ap5.  0.  0|  perflourinated~perfluorinated~perfluorobutane~perfluorooctane~perfluorooctanesulfonic~