| Ksander et al., 1997, J. Med. Chem. 40, (4) 495-505. |
| Mankin et al. 1970, J. Bone Joint Surg.. 52A, 424-434. |
| Mankin et al. 1978, Arthritis Rheum., 21, 761-766. |
| Woessner et al. 1983, Arthritis Rheum., 26, 63-68. |
| Woessner et al. 1984, Arthritis Rheum., 27, 305-312. |
| Lohmander et al. 1993, Arthritis Rheum., 36, 1214-1222. |
| Wahl et al. 1990, Ann. Rep. Med. Chem., 25, 177-184. |
| Feldman et al. 1994, Lancet, 344, 1105. |
| MacDonald et al. 1990, Clin. Exp. Immunol., 81, 301. |
| Gearing et al., 1994, Nature, 370, 555. |
| Robert & Vellaccio 1983, The Peptides 5, 342-429. |
| Kogan et al. 1990, Tetrahedron, 46, 6623. |
| Wernic et al. 1989, J. Organ Chem, 54, 4224. |
| Hughes D. 1992, Org. React, 42, 335. |
| Bennion et al. 1991, J. Med. Chem. 34, 439. |
| Stetler-Stevenson, 1990, Cancer & Metastases Review 9, 289-303. |
| Tortotella et al. 1995, Trans Ortho Res. Soc. 20, 341. |
| Remington's Pharm. Sci. 1985, 17th Ed., Mack Pub. Co., p.1418. |