Hi Rasool,

I can reccomend you a very nice and useful paper:

http://www.sciencedirect.com/science/article/pii/S0165993609001629

Moreover, check this youtube link where the main pre-processing methods for NIR are explained:

http://www.youtube.com/watch?v=dZcW35exnSs&list=PL1EE74D859AC78AE3

Cheers

Jose

Check nofima.no or http://www.models.life.ku.dk/ you will find plenty of reference and materials

Very useful book by Ozaki Y. et al.

http://eu.wiley.com/WileyCDA/WileyTitle/productCd-0471672017.html

My favorite: Beebe KR, Pell RJ, Seasholtz MB. Chemometrics: A Practical Guide. 1st ed. Wiley-Interscience; 1998.

Pre-processing methods can have their pitfalls, though, even methods that you might think can only help:

http://myweb.dal.ca/pdwentze/papers/a41.pdf

I think if you are going to use a powerful multivariate technique downstream (i.e. PLS), you are often better off feeding it the raw data.

Dear Rassol,

This book can be good for you :

Near-Infrared Technology: In the Agricultural and Food Industries (from Phil Williams and Karl Norris). 

Editor: Amer Assn of Cereal Chemists; Édition : 2 (novembre 2001)

ISBN-10: 1891127241

ISBN-13: 978-1891127243

Regards.

Ludovic.