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- [7] High-speed high-vacuum diffusion pumps REVIEW OF SCIENTIFIC INSTRUMENTS, 1932, 3 (09): : 482 - 487
- [8] BARIUM ABSORPTION PUMPS FOR HIGH-VACUUM SYSTEMS REVIEW OF SCIENTIFIC INSTRUMENTS, 1957, 28 (11): : 889 - 892
- [10] A HIGH-VACUUM CAMERA JOURNAL OF SCIENTIFIC INSTRUMENTS AND OF PHYSICS IN INDUSTRY, 1949, 26 (09): : 306 - 308