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References
- ↑ "Picture News: Whirlybird Flying Crane". Popular Science. June 1958. p. 94.
- 1 2 3 4 5 6 Taylor 1961, p. 300
- ↑ Gunston 2005 , pp. 348, 448
- ↑ Hawkes Aviation Week May 7, 1956 , p. 50
- ↑ Hawkes Aviation Week May 7, 1956 , pp. 50–51
- ↑ Bass Flying October 1961 , pp. 32–33
- 1 2 Aviation Week June 12, 1961 , pp. 123, 125
- ↑ Aviation Week November 11, 1963 , p. 108
- ↑ Taylor 1967 , p. 193
- ↑ R.Simpson (1998). Airlife's Helicopter and Rotorcraft.
- ↑ Aviation Week June 12, 1961 , p. 123
- ↑ Taylor 1967 , pp. 193–194
- ↑ Taylor 1969 , pp. 243–244
- Bass, A. C. (August 1961). "Pilot Report: Omega BS-12D-1: A "Flying Crane" Helicopter". Flying . Vol. 69, no. 2. pp. 32–33, 85–88.
- Gunston, Bill (2005). World Encyclopedia of Aircraft Manufacturers (2nd ed.). Stroud, UK: Sutton Publishing. ISBN 0-7509-3981-8.
- Hawkes, Russell (May 7, 1956). "Omega Helicopter Designed to Cut Cost" . Aviation Week . Vol. 64, no. 19. pp. 50–51, 53, 55.
- "Omega's BS-12-D-1 Helicopter Certified; Other Versions Planned" . Aviation Week . Vol. 74, no. 24. June 12, 1961. pp. 123, 125.
- "Production of Omega BS-12-D3S Awaits Court Merger Approval" . Aviation Week . Vol. 79, no. 20. November 11, 1963. p. 108.
- Taylor, John W. R. (1961). Jane's All the World's Aircraft 1961–62. London: Sampson Low, Marston & Company, Ltd.
- Taylor, John W. R. (1967). Jane's All the World's Aircraft 1967–68. London: Sampson Low, Marston & Company, Ltd.
- Taylor, John W. R. (1969). Jane's All the World's Aircraft 1969–70. London: Sampson Low, Marston & Co., Ltd.