Monitoring of coal waste piles with fiber optic sensing technology - Viveiros, D.; Ribeiro, J.; Ferreira, J.; Pinto, A.M.R.; Perez-Herrera, R.A.; Diaz, S.; Lopez-Gil, A.; Dominguez-Lopez, A.; Esteban, O.; Martins, H.F.; Martin-Lopez, S.; Baierl, H.; et al. (exp.at 2015 - 3rd Experiment International Conference: Online Experimentation, 2015)