Triska, Frank J, Pringle, Catherine M, Duff, John H, Avanzino, Ronald J, Ramirez, Alonso, Ardon, Marcelo, and Jackman, Alan P, 2006, Soluble Reactive Phosphorus Transport and Retention in Tropical, Rainforest Streams Draining a Volcanic and Geothermally Active Landscape in Costa Rica. : Long-Term Concentration Patterns, Pore Water Environment and Response to ENSO Events: Biogeochemistry, v. 81, iss. 2, p. 131-143.