For anyone with an interest in Latin American SF, there is the incredible (though, sadly, not exactly cheap), Latin American Science Fiction Writers: An A-to-Z Guide [Amazon] [Google Books] edited by Darrell B. Lockhart.
"This volume represents an attempt to provide a comprehensive inventory of Latin American science fiction writing. My interest in such a project stems from at least two primary motivating factors: first ,a personal fondness for a genre that has provided me with a great source of entertainment over the years; and second, the desire to engage in the more intellectual enterprise of literary history and interpretation in relation to the science fiction of Latin America."
The World SF Blog 
Must buy.