1. Genetic algorithm. Shoko-do; 1995.
2. An automatic design of telephone-handsets suppressing an effects of leak ? A design by nonlinear optimization technique. 15th International Congress on Acoustics, Vol. IV, p 213-216, Trondheim, Norway, 1995.
3. A design method for compact acoustic systems by means of genetic algorithm ? Improvement of sensitivity deterioration by leakage. Tech Rep IEICE 2000;EA2000-89.