34th Spring meeting of the Japan Society of Applied Physics, page. 863 - 863, 1987-01-01
34th Spring Meeting of the Japan Soc. of Appl. Phys., 1987-01-01
34th Spring meeting of the Japan Society of Applied Physics, page. 862 - 862, 1987-01-01
33rd Spring Meeting of Japan Soc. Appl. Phys, 1987-01-01
Gallium Arsenide and Related Compounds, page. 273 - 277, 1987-01-01