1. A method and simple device to precisely measure accelerator extraction efficiency and beam line transport efficiency;Hornstra;Fermilab Publication FN-252,1973
2. The Steady State of the Earth's Crust, Atmosphere and Oceans
3. Andrew Corporation, 10500 W. 153rd Street, Orland Park, Illinois 60462, U.S.A.
4. The SLAC Long Ion Chamber System for Machine Protection