作者单位: | [1]Department of Theoretical Physics and Cosmos, University of Granada, Av. Severo Ochoa s/n, 18071 Granada, Spain [2]Physics of the Earth, Sciences B, University of Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain [3]Department of Physics, Higher Polytechnic School, University of Jaen, C/ Virgen de la Cabeza 2, 23071 Jaen, Spain |