@article {Hopkins:July 2000:0304-4203:103, author = "Hopkins A.E.", author = "Sell K.S.", author = "Soli A.L.", author = "Byrne R.H.", title = "In-situ spectrophotometric pH measurements: the effect of pressure on thymol blue protonation and absorbance characteristics", journal = "Marine Chemistry", volume = "71", year = "July 2000", abstract = "", pages = "103-109(7)", url = "http://www.ingentaconnect.com/content/els/03044203/2000/00000071/00000001/art00043" doi = "doi:10.1016/S0304-4203(00)00043-8" }