Gerardo Castaño Recio
Gerardo Castaño Recio,
a Spanish medical doctor  at the Health Center of La Puebla de Montalbán, Province of Toledo. As avocational programmer, he is author of Salud 2000 (Health 2000), a program to manage cardiovascular risk factors, and author of the chess programs Zeus, Toledo 2000 and Caligula. All of his three engine names were later used by other programmers namesake!
- Facebook | Gerardo Castaño Recio
- Gerardo Castaño Recio's ICGA Tournaments
- MÉDICO CONTRA PC | Edición impresa El País, December 04, 1995 (Spanish)