%0 conference poster %@ %A Recio, R., Pradanos, P., hernandez, A., Shishatskiy, S., Peinemann, K.-V., Bottino, A., Capannelli, G. %D 2007 %J New Materials for Membranes, Marie Curie Training and Conferences on Membrane Technology %T Asymmetric membranes for gas separation. Different techniques to determine the active dense skin thickness %U %X