Zitzewitz, J. A., Gualfetti, P. J., Perkons, I. A., Wasta, S. A., & Matthews, C. R. (1999). Identifying the structural boundaries of independent folding domains in the alpha subunit of tryptophan synthase, a beta/alpha barrel protein. Cold Spring Harbor Laboratory Press.

Zitzewitz, J. A., P. J. Gualfetti, I. A. Perkons, S. A. Wasta, و C. R. Matthews. Identifying the Structural Boundaries of Independent Folding Domains in the Alpha Subunit of Tryptophan Synthase, a Beta/alpha Barrel Protein. Cold Spring Harbor Laboratory Press, 1999.

Zitzewitz, J. A., et al. Identifying the Structural Boundaries of Independent Folding Domains in the Alpha Subunit of Tryptophan Synthase, a Beta/alpha Barrel Protein. Cold Spring Harbor Laboratory Press, 1999.