An automated HPLC method for the fractionation of polychlorinated biphenyls, polychlorinated dibenzo-p-dioxins, and polychlorinated dibenzofurans in fish tissue on a porous graphitic carbon column - Echols, Kathy; Gale, Robert; Tillitt, Donald; Schwartz, Ted; O’Laughlin, Jerome (Environmental Toxicology and Chemistry, 1997)