IgM-like natural hemogglutinin from ratfish serum: isolation and physico-chemical characterization. (Callorhynchus callorhynchus). Developmental and Comparative Immunology, 4, 667–678
DOI: 10.1016/S0145-305X(80)80068-1
Immunoglobulin-like serum proteins from the ratfish (Callorhynchus callorhynchus) (author's transl). Archivos de biología y medicina experimentales, 12(1), 31–38