1. S. I. Sergeev, Damping of Mechanical Vibrations [in Russian], GIFM, Moscow (1958), pp. 69?76.
2. E. I. Rivin, Survey of Foreign Engineering Trends: Use of Vibration Isolating Supports for Mounting of Equipment without Foundation [in Russian], GOSNITI, Moscow (1962).
3. Z. P. Shul'man, R. G. Gorodkin, G. M. Blokh, and E. V. Korobko, ?Electrorheological plunger for brake,? Inventor's Certificate No. 625073; Byull. Izobret., No. 35 (1978).
4. Z. P. Shul'man, M. M. Ragotner, and E. V. Korobko, ?Electrically controlled clutch,? Inventor's Certificate No. 684211; Byull. Izobret., No. 33 (1979).
5. M. K. Zhokhovskii, Theory and Design of Devices with Nonhermetic Piston [in Russian], 3rd ed., Standartov, Moscow (1980).