1. Avrameas, S. 1969. Coupling of enzymes to proteins with glutaraldehyde. Use of the conjugates for the detection of antigens and antibodies. Immunochem. 6: 43–52.
2. Boshart, M., Gissman, L., Ikenberg, H., Kleinheinz, A., Scheurlen, W. and zur Hausen, H. 1984. A new type of papillomavirus DNA, its presence in genital cancer biopsies and in cell lines derived from cervical cancer. EMBO J. 3: 1151–1157.
3. Brown, J., Thayer, S.G. and Fletcher, O.J. 1988. A method to rapidly convert Newcastle Disease Virus and Infectious Bronchitis Virus ImmunoComb scores into conventional Hemag-glutination-Inhibition titers. Avian Dis. 32: 517–518.
4. Erigvall, E. and Perlmann, P. 1971. Enzyme-linked immunosorbent assay (ELISA). Quantitative assay of immunoglobulin G. Immunochem. 8: 871–879.
5. Engvall, E. and Perlmann, P. 1972. Enzyme-linked immunosorbent assay, ELISA. III. Quantitation of specific antibodies by enzyme-labeled anti-immunoglobulin in antigen-coated tubes. J. Immunol. 109: 129–135.