van de Schootbrugge, B; McArthur, JM; Bailey, TR; Rosenthal, Y; Wright, JD; Miller, KG; (2005) Toarcian oceanic anoxic event: An assessment of global causes using belemnite C isotope records. Paleoceanography , 20 (3) , Article PA3008. 10.1029/2004PA001102.