Gupta, R. K., Egan, W., Bryla, D. A., Robbins, J. B., & Szu, S. C. (1995). Comparative immunogenicity of conjugates composed of Escherichia coli O111 O-specific polysaccharide, prepared by treatment with acetic acid or hydrazine, bound to tetanus toxoid by two synthetic schemes.

Gupta, R K., W. Egan, D A. Bryla, J B. Robbins, i S C. Szu. Comparative Immunogenicity of Conjugates Composed of Escherichia Coli O111 O-specific Polysaccharide, Prepared By Treatment With Acetic Acid or Hydrazine, Bound to Tetanus Toxoid By Two Synthetic Schemes. 1995.

Gupta, R K., et al. Comparative Immunogenicity of Conjugates Composed of Escherichia Coli O111 O-specific Polysaccharide, Prepared By Treatment With Acetic Acid or Hydrazine, Bound to Tetanus Toxoid By Two Synthetic Schemes. 1995.