%0 Journal Article %A Nicolas Tribovillard %T The Ge/Si ratio as a tool to recognize biogenic silica in chert %J Comptes Rendus. GĂ©oscience %D 2013 %P 160-165 %V 345 %N 3 %I Elsevier %R 10.1016/j.crte.2013.02.005 %G en %F CRGEOS_2013__345_3_160_0