...
- http://www.sciencedirect.com/science/article/pii/S0273117799009266 (Accessed 15.4.2014)
- http://www.webpages.uidaho.edu/~vonw/pubs/WaldenEtAl_2010.pdf (Accessed 15.4.2014)
- http://suzaku.eorc.jaxa.jp/GLI2/adeos/Project/Img.html (Accessed 15.4.2014)
http://www.sciencedirect.com/science/article/pii/S0273117799009266/pdf?md5=d94773c8e7a93436573522036217bdd1&pid=1-s2.0-S0273117799009266-main.pdf (Accessed 22.2014)
- http://pcwww.liv.ac.uk/~nichols/documents/docs/Fourier_handbook1.pdf (Accessed 27.4.2014)
- http://mmrc.caltech.edu/FTIR/FTIRintro.pdf (Accessed 27.4.2014)