 in 1992 Pilón published the above chart in the popular Spanish magazine "".In 2014, investigative journalism TV show "Cuarto Milenio", presented by Iker Jiménez, carried on a technical analysis in order to discover the possible hoax.The research was realized by José Javier Gracenea, doctor in chemical engineering and general manager of Medco, and Luis Alamancos, forensic criminalist, chairman of Gabinete Pericial Inpeval and director of the Spanish Institute of Applied Criminalistics, later awarded with the European Police Cross of Honor.