ELECTRONICS LETTERS, vol. 35, no. 21, page. 1825 - 1826, 1999-10-14
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, vol. E82-A, no. 3, page. 504 - 511, 1999-03
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, vol. E80-A, no. 9, page. 1676 - 1683, 1997-09
INTERNATIONAL JOURNAL OF ELECTRONICS, vol. 80, no. 6, page. 703 - 716, 1996-06
ELECTRONICS LETTERS, vol. 32, no. 1, page. 8 - 9, 1996-01-04
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, vol. E78A, no. 5, page. 632 - 640, 1995-05
INTERNATIONAL JOURNAL OF ELECTRONICS, vol. 78, no. 2, page. 333 - 345, 1995-02