• An acid-free method of microfossil extraction from clay-rich lithologies using the surfactant RewoquatJarochowska, Emilia; Tonarová, Petra; Munnecke, Axel; Ferrová, Lenka; Sklenář, Jan; Vodrážková, StanislavaPalaeontologia Electronica2013 https://doi.org/10.26879/382 https://www.scopus.com/sourceid/14002 https://www.scopus.com/record/display.uri?eid=2-s2.0-84889237947&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=DOI%2810.26879%2F382%29&sessionSearchId=a88c91798536c2709b65db4b89fc4124 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=PALAEONTOL%20ELECTRON&year=2013