@inbook {16032,
	title = {Surface charge of bioactive polyethylene modified with -SO3H groups and its apatite inducing capability in simulated body fluid},
	booktitle = {Bioceramics 17},
	series = {Li P., Colwell C., Trans Tech Publications: Zurich},
	year = {2005},
	month = {2011-07-07},
	pages = {453-456},
	author = {Leonor, I. B. and Kim, H. - M. and Balas, F. and Kawashita, M. and Reis, R. L. and Kokubo, T. and Nakamura, T.}
}
