Guitart C, Slattery M, Ankisetty S, Radwan M, Ross SJ, Letcher RJ, Reddy CM.  2011.  Contemporary 14C radiocarbon levels of oxygenated polybrominated diphenyl ethers (O-PBDEs) isolated in sponge?cyanobacteria associations. Marine pollution bulletin. 62(3):631-636.