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- SPIE Digital Library33
- Singh, Upendra N.25
- Society of Photo-Optical Instrumentation Engineers24
- Society of Photo-optical Instrumentation Engineers13
- SPIE (Society)12
- Pappalardo, Gelsomina6
- SPIE (Society), issuing body, sponsoring body6
- American Chemical Society. Division of Environmental Chemistry, sponsoring body5
- Bissonnette, Luc R.5
- Gao, Wei, 1962-5
- Langley Research Center5
- United States. National Aeronautics and Space Administration5
- ebrary, Inc5
- Goddard Space Flight Center, issuing body4
- Herman, Jay R.4
- Miller, Walter B. (Walter Blaine), 1933-4
- American Chemical Society. Division of Analytical Chemistry, sponsoring body3
- Asai, Kazuhiro3
- Dainty, J. C.3
- European Optical Society3