"In his book, "Franco and the Axis Stigma", David Wingeate Pike refers to Carmen's investigation into the number of Germans in Spain in 1946, which she estimated at between 100,000 and 500,000 including 6,000 scientists and technicians.Carmen died in Paris in January 1959, where her remains are interred in the Montparnasse Cemetery (Division 18; Line 1 south, Tomb 30 west).