Rodríguez-Salazar, M. T.; Morton-Bermea, O.; Hernández-Álvarez, E.; García-Arreola, M. E.; Ortuño-Arzate, M. T. Development and Validation of an Analytical Method for the Determination of Lead Isotopic Composition Using ICP-QMS. Geofis Int 2010, 49, 113-117.