Córcoles, J., M. A. González, J. Rubio, and J. Zapata,  "Array design for different SLL and null directions with an interior-point optimization method from the generalized-scattering-matrix and spherical modes",  Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on, pp. 1381-1385, March, 2009.

Córcoles, J., M. A. González, and J. Rubio,  "Multiobjective Optimization of Real and Coupled Antenna Array Excitations via Primal-Dual, Interior Point Filter Method From Spherical Mode Expansions",  IEEE Transactions on Antennas and Propagation, vol. 57, no. 1, pp. 110-121, Jan, 2009.

Fahmi, M. M., J. A. Ruiz-Cruz, K. A. Zaki, and A. J. Piloto,  "LTCC wide-band canonical ridge waveguide filters",  2005 IEEE MTT-S International Microwave Symposium Digest, pp. 249-252, June, 2005.

Ruiz-Cruz, J. A., K. A. Zaki, J. R. Montejo-Garai, and J. M. Rebollar,  "Rectangular waveguide elliptic filters with capacitive and inductive irises and integrated coaxial excitation",  2005 IEEE MTT-S International Microwave Symposium Digest, pp. 269-272, June, 2005.

Ruiz-Cruz, J. A., Y. Zhang, K. A. Zaki, A. J. Piloto, and J. M. Rebollar,  "Ridge waveguide branch-line directional couplers for wideband applications and LTCC technology",  2005 IEEE MTT-S International Microwave Symposium Digest, pp. 1219-1222, June, 2005.