Gregersen, P. K., Moriuchi, T., Karr, R. W., Obata, F., Moriuchi, J., Maccari, J., . . . Silver, J. (1986). Polymorphism of HLA-DR beta chains in DR4, -7, and -9 haplotypes: Implications for the mechanisms of allelic variation.

Gregersen, P K., T. Moriuchi, R W. Karr, F. Obata, J. Moriuchi, J. Maccari, D. Goldberg, R J. Winchester, e J. Silver. Polymorphism of HLA-DR Beta Chains in DR4, -7, and -9 Haplotypes: Implications for the Mechanisms of Allelic Variation. 1986.

Gregersen, P K., et al. Polymorphism of HLA-DR Beta Chains in DR4, -7, and -9 Haplotypes: Implications for the Mechanisms of Allelic Variation. 1986.