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- [22] Short-haul communications using NVIS HF radio (vol 11, pg 95, 1999) ELECTRONICS & COMMUNICATION ENGINEERING JOURNAL, 1999, 11 (03): : 124 - 124
- [27] An interview with Winfried J. Huppman (vol 35, pg 5, 1999) INTERNATIONAL JOURNAL OF POWDER METALLURGY, 1999, 35 (05): : 30 - 30