Authors: Kok, MD Rijpstra, WIC Robertson, L Volkman, JK Damste, JSS

Citation: Md. Kok et al., Early steroid sulfurisation in surface sediments of a permanently stratified lake (Ace Lake, Antarctica), GEOCH COS A, 64(8), 2000, pp. 1425-1436

Authors: Kok, MD Schouten, S Damste, JSS

Citation: Md. Kok et al., Formation of insoluble, nonhydrolyzable, sulfur-rich macromolecules via incorporation of inorganic sulfur species into algal carbohydrates, GEOCH COS A, 64(15), 2000, pp. 2689-2699

Authors: Gelin, F Kok, MD De Leeuw, JW Damste, JSS

Citation: F. Gelin et al., Laboratory sulfurisation of the marine microalga Nannochloropsis salina, ORG GEOCHEM, 29(8), 1998, pp. 1837-1848

Authors: Damste, JSS Kok, MD Koster, J Schouten, S

Citation: Jss. Damste et al., Sulfurized carbohydrates: an important sedimentary sink for organic carbon?, EARTH PLAN, 164(1-2), 1998, pp. 7-13