1. Microbial community analysis of opalinus clay drill core samples from the Mont Terri Underground Research Laboratory, Switzerland;Stroes-Gascoyne;Geomicrobiol J.,2007
2. DIN ISO 16000-17: 2010, Indoor air - Part 17: detection and enumeration of moulds - culture-based method (ISO 16000-17:2008),
3. Starved bacteria retain their size but lose culturability – Lessons from a 5000 years old undisturbed A-horizon;Vestergård;Soil Biol. Biochem.,2011
4. DIN ISO 16000-18: 2012, Indoor air - Part 18: Indoor air - Part 18: Detection and enumeration of moulds - Sampling by impaction (ISO 16000-18:2011): (https://www.iso.org/standard/44325.html).
5. VDI 4253 Blatt 4:2013, Bioaerosols and biological agents - Determination of total cell count by fluorescence analysis after staining with DAPI (https://www.beuth.de/de/technische-regel/vdi-4253-blatt-4/166129259).