academic article

• A fossil winonaite-like meteorite in Ordovician limestone: A piece of the impactor that broke up the L-chondrite parent body?.  Earth and Planetary Science Letters.  400:145-152. 2014
• The Global Stratotype Sections and Points for the bases of the Selandian (Middle Paleocene) and Thanetian (Upper Paleocene) stages at Zumaia, Spain.  Episodes.  34:220-243. 2011
• Determining the impactor of the Ordovician Lockne crater: Oxygen and neon isotopes in chromite versus sedimentary PGE signatures.  Earth and Planetary Science Letters.  306:149-155. 2011
• Asteroid breakup linked to the Great Ordovician Biodiversification Event.  Nature Geoscience.  1:49-53. 2008
• Platinum group elements and 187Os/188Os in a purported impact ejecta layer near the Eifelian–Givetian stage boundary, Middle Devonian.  Earth and Planetary Science Letters.  249:162-172. 2006
• Basaltic explosive volcanism, but no comet impact, at the Paleocene–Eocene boundary: high-resolution chemical and isotopic records from Egypt, Spain and Denmark.  Earth and Planetary Science Letters.  225:1-17. 2004
• A rain of ordinary chondritic meteorites in the early Ordovician.  Earth and Planetary Science Letters.  194:1-15. 2001
• Accretion rates of meteorites and cosmic dust in the Early Ordovician..  Science Science.  278:88-90. 1997