1.  O.F. Siddiqui and G.V. Eleftheriades, "Spatial-Filtering Microwave Devices Using Metallic Anisotropic Grids Over Ground, "presented at the European Microwave Week, Manchester, UK, September 2006.

2.  O.F. Siddiqui, K.G.Balmain and G.V. Eleftheriades, "Propagation of Resonance Cones in Truncated Hyperbolic Transmission-Line Grids Over Ground," presented at the International Microwave Symposium (IMS), Long Beach,CA, June2005.

3.  M.Mojahedi, G.V.Eleftheriades, O. Siddiqui, and S. Erickson,“Dispersion Engineering: TheUse of Negative Phase and Group Indices to Compensate Dispersive Effects, ”Bianisotropics 2004-10thConference on Complex Media and Metamaterials, Ghent, Belgium, September 22-24, 2004

4.  S.J. Erickson, O. F. Siddiqui, G. V.Eleftheriades,and M. Mojahedi, “ Transmission Line meta-materials with Effective Negative Refractive Index and Negative Group Delay,” Buletin of American Physical Society, Montreal, Canada, March 22-26, 2004.

5.  O. Siddiqui, M. Mojahedi, S. Erickson, andG. V. Eleftheriades, “Periodically Loaded Transmission Line with Effective Negative Refractive Index and Negative Group Velocity,”AP-S Internationa Symposium and USNC/CNC/URSI National Radio Science Meeting, Columbus, Ohio,USA, June 22-27, 2003.

6. M. Mojahedi, O. Siddiqui, J.Woodley, and G. V. Eleftheriades, “Pulse Propagation and Negative Group Delay in Metamaterials, ”Progress in Electromagnetics Research Symposium (PIERS), Cambridge, Massachusets, USA, July 1-5, 2002.

7.  Omar Siddiqui, A.K. Fung, and Saibun Tjuatja, “A Tree Model for Wireless Propagation Modeling”, Progress in Electromagnetics Research Symposium (PIERS), Cambridge, Massachusets,USA, 1997.

8.  Omar Siddiqui and Saibun Tjuatja “Fading Statistics in the shadowed region of a tree”, Progress in Electromagnetics Research Symposium (PIERS),

Toulouse, France, 1998.