1. (1) For example, K. Tajima, H. Kouno, and K. Nemoto: “Magnetic Noise of Fan Motor”, Hitachi Reviews, Vol. 51, p. 938 (1969-10) (in Japanese)
2. 例えば,田島邦雄·高野久行·根本和夫:「扇風機用モータの磁気音についての検討」, 日立評論, 51, p. 938 (1969-10)
3. Experimental study on the electromagnetic vibration of a capacitor induction motor.