In 1979, with Paul Heath Hoeffel, I wrote "Missing or Dead in Argentina: The Desperate Search for Thousands of Abducted Victims."

For this article, published as a cover story in The New York Times Magazine, we received the 1979 Overseas Press Club of America award for the best article on Human Rights. For that article, I used the pseudonym Juan Montalvo, to protect my family in Argentina from possible military reprisals.

U.S. President Barack Obama's recent decision to unseal U.S. files on Argentina's "dirty war" is particularly valuable to us, since it will confirm our denunciations of the abuses by the Argentine military on that country's civilian population.