1. Structural Researcher, School of Mines, National Univ. of Columbia at Medellin, Medellin AA. 75267, Columbia; formerly, Research Engineer, NESCO, Madrid, Spain.
2. Structural Researcher, School of Mines, National Univ. of Columbia at Medellin, Medellin AA. 75267, Columbia.
3. 125-Year Generation International Professor, School of Mines, National Univ. of Columbia at Medellin, Medellin AA. 75267, Columbia (corresponding author).