Affiliation: | (1) Institute of Mathematics, Statistics and Scientific Computation, IMECC-UNICAMP, CP 6065, 13081-970 Campinas, SP, Brazil;(2) Institute of Physics Gleb Wataghin, IFGW-UNICAMP, 13083-970 Campinas, SP, Brazil;(3) Institute of Mathematics, Statistics and Scientific Computation, IMECC-UNICAMP, CP 6065, 13081-970 Campinas, SP, Brazil;(4) Center for Research and Technology, CPTEC-UNISAL, 13087-290 Campinas, SP, Brazil |