por Symposium on Modern Physics (1967 : New York).
por Symposium on Information Networks , New York, 1954 | Brooklyn Polytechnic Institute.
por Symposium on Electronic Waveguides (1958 : New York) | Brooklyn Polytechnic Institute.
por Symposium on Millimeter Waves (1959 : New York) | Brooklyn Polytechnic Institute.
por Symposium on Nonlinear Circuit Analysis (1956 : New York).
por Symposium on Nonlinear Circuit Analysis (1953 : New York).