"Artículos de Alejandro Castro Espín". CUBADEBATE (in Spanish). Círculo de Periodistas Cubanos contra el Terrorismo. 14 September 2005. Archived from the original on 29 August 2010. Retrieved 31 July 2010.
"Chronicle on Cuba"(PDF) (in Spanish). FOCAL's Research Forum on Cuba. February 2009. Archived from the original(PDF) on 2010-07-02. Retrieved 31 July 2010.
"Artículos de Alejandro Castro Espín". CUBADEBATE (in Spanish). Círculo de Periodistas Cubanos contra el Terrorismo. 14 September 2005. Archived from the original on 29 August 2010. Retrieved 31 July 2010.
"Chronicle on Cuba"(PDF) (in Spanish). FOCAL's Research Forum on Cuba. February 2009. Archived from the original(PDF) on 2010-07-02. Retrieved 31 July 2010.