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- [2] ARTIFICIAL TWINNING IN SYNTHETIC QUARTZ CRYSTALS SOVIET PHYSICS CRYSTALLOGRAPHY, USSR, 1968, 12 (06): : 954 - &
- [3] ARTIFICIAL ELECTRICAL TWINNING IN QUARTZ CRYSTALS PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS, 1947, 35 (08): : 789 - 790
- [6] Use of the etch technique for determining orientation and twinning in quartz crystals BELL SYSTEM TECHNICAL JOURNAL, 1944, 23 : 11 - 51
- [9] HIGH-FREQUENCY QUARTZ FILTER CRYSTALS PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS, 1958, 46 (03): : 617 - 618