Ruiz-Cruz, J. A., G. G. Gentili, and J. M. Rebollar,  "Analysis of waveguide junctions by the Boundary Contour Mode-Matching Method with segmented regions",  Proc. 2005 USNC/URSI National Radio Science Meeting, pp. 1, July, 2005.

Ruiz-Cruz, J. A., J. R. Montejo-Garai, and J. M. Rebollar,  "Application of the simulated annealing for waveguide filters with complicated frequency response",  WSEAS Transactions on Mathematics, vol. 3, no. 4, pp. 807-812, Oct., 2004.

Ruiz-Cruz, J. A., and J. M. Rebollar,  "An alternative interpretation of resonance of two-aperture irises in rectangular waveguide",  Proc. 2003 USNC/URSI National Radio Science Meeting, pp. 226, June, 2003.

Ruiz-Cruz, J. A., and J. M. Rebollar,  "Análisis de uniones en guía de onda plano E y H mediante el método BCMM y el uso de la FFT",  Proc. 2002 Simposium Nacional URSI (in Spanish), pp. 519-520, Sept., 2002.