1.- A carbon isotope challenge to the snowball Earth Macmillan Journals; London; GBR; United Kingdom, 2011 Ver registro 2.- Biodiversity collapse and red algal bloom in the Neoproterozoic snowball Earth aftermath [publisher varies]; [location varies]; III; International, 2007 The 23rd international meeting on Organic geochemistry; book of abstracts Ver registro 3.- Comparison of generative capacities for bitumen and gas between Carboniferous coals from Donets Basin (Ukraine) and a Cretaceous coal from Sabinas-Piedras Negras Basin (Mexico) during artificial maturation in confined pyrolysis system Elsevier; Amsterdam; NLD; Netherlands, 2007 TSOP 2005; papers from the 22nd annual meeting of TSOP Ver registro 4.- Comparison of hydrocarbon gases (C (sub 1) -C (sub 5) ) production from Carboniferous Donets (Ukraine) and Cretaceous Sabinas (Mexico) coals Elsevier; Amsterdam; NLD; Netherlands, 2008 Ver registro