1. U.S. EPA. 2002 Guidance on Choosing a Sampling Design for Environmental Data Collection for Use in Developing a Quality Assurance Project Plan
2. Microbial sampling-is it better to sample many times or use large samples;Haas;Wat Sci Technol,1993
3. Transport and fate of microorganisms in porous media: a theoretical investigation;Corapcioglu;J Hydrol,1984
4. Each water outlet is a unique ecological niche for Legionella pneumophila;Marrie;Epi Infect,1992