存档副本(PDF). [2009-07-23]. (原始内容(PDF)存档于2010-12-06). Guillermo E. Alvarado, el. al., 2006, Recent volcanic history of Irazú volcano, Costa Rica: Alternation and
mixing of two magma batches, and pervasive mixing Geological Society of America, Special Paper 412
存档副本(PDF). [2009-07-23]. (原始内容(PDF)存档于2010-12-06). Guillermo E. Alvarado, el. al., 2006, Recent volcanic history of Irazú volcano, Costa Rica: Alternation and
mixing of two magma batches, and pervasive mixing Geological Society of America, Special Paper 412