Seifert, A and Kopf, AJ (2012) Modified dynamic CPTU penetrometer for fluid mud detection. Journal of Geotechnical and Geoenvironmental Engineering, 138(2). 203-206. doi:10.1061/(ASCE)GT.1943-5606.0000563
Seifert, A, Stegmann, S, Mörz, T, Lange, M, Wever, T and Kopf, AJ (2008) In situ pore-pressure evolution during dynamic CPT measurements in soft sediments of the western Baltic Sea. Geo-Marine Letters, 28(4). 213-227. doi:10.1007/s00367-008-0102-x
Seifert, A (2011) In situ detection and characterisation of fluid mud and soft cohesive sediments by dynamic piezocone penetrometer testing. PhD thesis, Elektronische Dissertationen an der Staats- und Universitätsbibliothek Bremen, Germany. urn:nbn:de:gbv:46-00101875-18