T. Besch, S. P. Verma, U. Kramm, J. F. W. Negendank, H. J. Tobschall, y R. Emmermann, «Assimilation of sialic crustal material by volcanics of the easternmost extension of the Trans-Mexican Volcanic Belt Evidence from Sr and Nd isotopes», Geofis Int, vol. 34, n.º 3, pp. 263–281, jul. 1995.