Souza (2006) "An endangered oasis of aquatic microbial biodiversity in the Chihuahuan desert" "Archived copy"(PDF). Archived(PDF) from the original on 2015-09-24. Retrieved 2009-01-15.{{cite web}}: CS1 maint: archived copy as title (link)
Souza (2006) "An endangered oasis of aquatic microbial biodiversity in the Chihuahuan desert" "Archived copy"(PDF). Archived(PDF) from the original on 2015-09-24. Retrieved 2009-01-15.{{cite web}}: CS1 maint: archived copy as title (link)