1. For a comprehensive review on the physiology and pathology of bones, see: Principles of Bone Biology; Bilezikan, J. P.; Raicz, L. G.; Rogan, G., Eds.; Academic Press: New York, 1996.
2. Fujimoto, D.; Moriguchi, T.; Ishida, T.; Hayashi, H. Biochem. Biophys. Res. Commun. 1978, 84, 52.
3. Ogawa, T.; Ono, T.; Tsuda, M.; Kawanishi, Y. Biochem. Biophys. Res. Commun. 1982, 107, 1252.
4. For reviews on collagen cross-links, see: (a) Watts, N. B. Clin. Chem. 1999, 45, 1359. (b) Knott, L.; Baily, A. J. Bone 1998, 22, 181. (c) James, I. T.; Walne, A. J.; Perrett, D. Ann. Clin. Biochem. 1996, 33, 397. (d) Eyre, D. R. In Ref. 1, p. 143.
5. (a) Eyre, D. R.; Oguchi, H. Biochem. Biophys. Res. Commun. 1980, 92, 403. (b) Robins, S. P. Biochem. J. 1983, 215, 167. (c) Gunja-Smith, Z.; Boucek, R. J. Biochem. J. 1981, 197, 759. (d) Hanson, D. A.; Eyre, D. R. J. Biol. Chem. 1996, 271, 26508.