| 2012 | ISCAS | Finding all modes of nonlinear oscillations by the Krawczyk-Moore-Jones algorithm. | Kohshi Okumura |
| 2005 | ISCAS | Moore test using Gray code. | Takashi Hisakado, Kohshi Okumura |
| 2005 | ISCAS | Algebraic representation of error bounds for describing function using Groebner base [nonlinear circuit analysis example]. | Masakazu Yagi, Takashi Hisakado, Kohshi Okumura |
| 2004 | ISCAS | Logically reversible arithmetic circuit using pass-transistor. | Takashi Hisakado, Hiroyoshi Iketo, Kohshi Okumura |
| 2003 | ISCAS | Characterization of a simple communication network using Legendre transform. | Takashi Hisakado, Kohshi Okumura, Vladimir Vukadinovic, Ljiljana Trajkovic |
| 2003 | ISCAS | Estimation of transmission line parameters by adaptive inverse scattering. | A. Yonemoto, Takashi Hisakado, Kohshi Okumura |
| 2003 | ISCAS | An implementation of numerical inversion of Laplace transforms on FPGA. | A. Yonemoto, Takashi Hisakado, Kohshi Okumura |
| 2002 | ISCAS | Hardware implementation of Moore test on FPGA. | Takushi Hisakado, Tsuneto Nishimura, Kohshi Okumura |
| 2002 | ISCAS | Fault location of single-phase transmission lines by Laguerre function. | A. Yonemoto, Takashi Hisakado, Kohshi Okumura |
| 2002 | ISCAS | An improvement of convergence of FFT-based numerical inversion of Laplace transforms. | A. Yonemoto, Takashi Hisakado, Kohshi Okumura |
| 2001 | ISCAS | Algebraic representation of bifurcations in global parameter space with Grbner bases. | Takashi Hisakado, Kohshi Okumura |
| 1999 | ISCAS | Steady states prediction in nonlinear circuit by wavelet transform. | Takashi Hisakado, Kohshi Okumura |
| 1994 | ISCAS | A Method for Solving Complex Linear Equation of AC Network by Interval Computation. | Kohshi Okumura, Satoru Higashino |
| 1993 | ISCAS | Subharmonic entrainment of frequency in nonlinear three-phase circuits with symmetry. | Kohshi Okumura, Naofumi Miyamoto |