1. Computer Science and Mathematic
Division and Center for Nanophase Materials Sciences, Oak Ridge National
Laboratory, Bethel Valley Road, Oak Ridge, Tennessee 37831
2. Advanced Materials Department, IPICyT, Camino a la Presa San Jose 2055, 78216 San Luis Potosi, Mexico
3. School of Materials and Department of Physics, Arizona State University, Tempe, Arizona 85287