Litman, G.W. & Erickson, B.W. & Lederman, L. & Mäkelä, O. (1982)
Antibody response in Heterodontus. Molecular and Cellular Biochemistry, 45(1), 49–57
DOI: 10.1007/BF01283163
Mäkelä, O. & Litman, G.W. (1980)
Lack of heterogeneity in anti-hapten antibodies of a phylogenetically primitive shark. Nature, 287(5783), 639–640
DOI: 10.1038/287639a0
Litman, G.W. & Scheffel, C. & Mäkelä, O. (1980)
Immunoglobulin diversity in the phylogenetically primitive shark Heterodontus francisci: Comparison of fine specificity in hapten binding by antibody to p-azobenzenearsonate. Immunology Letters, 1(4), 213–215
DOI: 10.1016/0165-2478(80)90044-9