Sham, H. L., Betebenner, D. A., Rosenbrook, W., Herrin, T., Saldivar, A., Vasavanonda, S., . . . Norbeck, D. W. (2004). Novel lopinavir analogues incorporating heterocyclic replacements of six-member cyclic urea––synthesis and structure–activity relationships. Bioorganic & Medicinal Chemistry Letters, 14(10), 2643-2645. https://doi.org/10.1016/j.bmcl.2004.02.089

Sham, Hing L., David A. Betebenner, William Rosenbrook, Thomas Herrin, Ayda Saldivar, Sudthida Vasavanonda, Jacob J. Plattner, and Daniel W. Norbeck. "Novel Lopinavir Analogues Incorporating Heterocyclic Replacements of Six-member Cyclic Urea––synthesis and Structure–activity Relationships." Bioorganic & Medicinal Chemistry Letters 14, no. 10 (2004): 2643-2645. https://doi.org/10.1016/j.bmcl.2004.02.089.

Sham, Hing L., et al. "Novel Lopinavir Analogues Incorporating Heterocyclic Replacements of Six-member Cyclic Urea––synthesis and Structure–activity Relationships." Bioorganic & Medicinal Chemistry Letters, vol. 14, no. 10, 2004, pp. 2643-2645, https://doi.org/10.1016/j.bmcl.2004.02.089.