1. 1) Agranovski, I. E., Agranovski, V., Grinshpun, S. A., Reponen, T. and Willeke, K.: Collection of airborne microorganisms into liquid by bubbling through porous medium. Aerosol. Sci. Tech., 36, 502-509 (2002).
2. 2) Amann, R. I., Ludwig, W. and Schleifer, K. H.: Phylogenetic identification and in situ detection of individual microbial cells without cultivation. Microbiol. Rev., 59, 143-169 (1995).
3. 3) Bruckner, J. C., Yalamanchili, R. C., Fields, R., Sumner, R. and Venkateswaran, K.: Systematic sampling and processing of nucleic acids for low biomass samples. Presented at the 105th General Meeting of the American Society of Microbiology, Atlanta, GA (2005).
4. 4) Buttner, M. P., Cruz, P., Stetzenbach, L. D., Klima-Comba, A. K., Stevens, V. L. and Emanuel, P. A.: Evaluation of the Biological Sampling Kit (BiSKit) for large-area surface sampling. Appl. Environ. Microbiol., 70, 7040-7045 (2004).
5. 5) Chung, S., Venkateswaran, K., Echeverria, C., La Duc, M., Schubert, W., Kazarians, G., Wainwright, N., Basic, C. and Kern, R.: Microbial populations in spacecraft assembly facilities as determined by LAL assay. Presented at the 101st General Meeting of the American Society for Microbiology, Orlando, FL (2001).