J. Chem. Soc., Faraday Trans., 1997, 93, 4377 - 4381, DOI: 10.1039/a705896i
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FTIR and TPD studies on the adsorption of pyridine, n-butylamineand acetic acid on calcium hydroxyapatite
Hidekazu Tanaka, Tohru Watanabe and and Masatoshi Chikazawa
http://www.rsc.org/Publishing/Journals/FT/article.asp?doi=a705896i