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Ebrahim Elkhtab

hello Dr. Mahmoud, look at this paper it may be old but I think it can help'

http://ndfs.byu.edu/Portals/9/docs/research/long/Holly%20Curtis%20Thesis.pdf

http://pubs.acs.org/doi/abs/10.1021/jf9703720?journalCode=jafcau

M. M. Khalil

Dear Dr. Ebrahim,

Thanks so much for these papers. very helpful papers.

Hope everything is going well with you

Regards,