Rahemtulla, F. & Hoglund, N.G. & Lovtrup, S. (1976)
Acid mucopolysaccharides in the skin of some lower vertebrates (Hagfish, lamprey and Chimaera).
Comparative Biochemistry and Physiology – Part B, Comparative Biochemistry, 53(3), 295–298 DOI: 10.1016/0305-0491(76)90329-1