1. On the singularity expansion method for the solution of electromagnetic interaction problems. Interaction Note 88;Baum,1971
2. The singularity expansion method;Baum,1976
3. Emerging technology for transient and broad-band analysis and synthesis of antennas and scatters;Baum,1976
4. Toward an engineering theory of electromagnetic scattering: The singularity and eigenmode expansion methods;Baum,1978
5. The singularity expansion method: Background and developments;Baum;IEEE Ant. Prop. Newsletter,1986