by Pivnenko, S., Pallesen, J.E., Breinbjerg, O., Castaner, M.S., Almena, P.C., Portas, C.M., Sanmartin, J.L.B., Romeu, J., Blanch, S., Gonzalez-Arbesu, J.M., Sabatier, C., Calderone, A., Portier, G., Eriksson, H., Zackrisson, J.
Published in IEEE transactions on antennas and propagation (01.07.2009)