Portillo, E., Cabanes, I., Marcos, M., Zubizarreta, A. On the Application of Recurrent Neural Network Techniques for Detecting Instability Trends in an Industrial Process, 12th IEEE International Conference on Emerging Technologies and Factory Automation, Patras, Grecia, 2007. ISBN: 1-4244-0826-1.

Portillo, E., Cabanes, I., Marcos, M., Sánchez, J.A. Anticipation of wire breakage in WEDM based on neural networks, XV International Symposium of ElectroMachining, Pittsburgh, Pennsylvania, USA, 2007. ISBN: 978-0-9794977-0-4.

Portillo, E., Cabanes, I., Marcos, M., Orive, D., Sánchez, J.A., Maidagan, X. Study Of Pulse Instability In Wire-Electro Discharge Machining Process, 15th International DAAAM Symposium, Viena, Autria, 2004.