Schäfer, K. Spectroscopic Atmospheric Environmental Monitoring Techniques. SPIE Digital Library.
Chicago-čujuhus (17. p.)Schäfer, Klaus. Spectroscopic Atmospheric Environmental Monitoring Techniques. SPIE Digital Library.
MLA-čujuhus (9. p.)Schäfer, Klaus. Spectroscopic Atmospheric Environmental Monitoring Techniques. SPIE Digital Library.
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