1. Badino G, Forti P (2007) The exploration of the caves of the Giant Crystals (Naica, Mexico) NSS News 65:12–18
2. Barton HA, Jurado V (2007) What’s up down there? Microbial diversity in caves. Microbe 2:132–138
3. Bergey’s Manual of Systematic Bacteriology (2012) Goodfellow M, Kämpfer P, Busse H-J, Trujillo ME, Suzuki K-I, Ludwig W, Whitman WB (eds) Bergey’s manual of systematic bacteriology: the actinobacteria, part A, 2nd edn, vol 5. Springer, New York
4. Bhullar K, Waglechner N, Pawlowski A, Koteva K, Banks ED, Johnston MD, Barton HA, Wright GD (2012) Antibiotic resistance is prevalent in an isolated cave microbiome. PLoS One 7:e34953
5. Bull AT (ed) (2004) Microbial diversity and bioprospecting. ASM Press, Washington DC