NASA - National Aeronautics and Space Administration

Blackwell, W. J., J. W. Barrett, F. W. Chen, R. V. Leslie, P. W. Rosenkranz, M. Schwartz, and D. H. Staelin. (2001), NPOESS aircraft sounder testbed-microwave (NAST-M): Instrument description and initial flight results, IEEE Trans. Geosci. Remote Sens., 39, 2444-2453.