Chatziioannidis, C.C. & Karamanos, N.K. & Anagnostides, S.T. & Tsegenidis, T. (1999)
Purification and characterisation of a minor low-sulphated dermatan sulphate-proteoglycan from ray skin. Biochimie, 81(3), 187–196
DOI: 10.1016/S0300-9084(99)80051-0

Chatziioannidis, C.C. & Karamanos, N.K. & Tsegenidis, T. (1999)
Isolation and characterisation of a small dermatan sulphate proteoglycan from ray skin (Raja clavata). Comparative Biochemistry and Physiology – Part B, Biochemistry and Molecular Biology, 124(1), 15–24
DOI: 10.1016/S0305-0491(99)00092-9

Karamanos, N.K. & Manouras, A. & Politou, D. & Gritsoni, P. & Tsegendidis, T. (1991)
Isolation and high-performance liquid chromatographic analysis of ray (Raja clavata) skin glycosaminoglycans. Comparative Biochemistry and Physiology – Part B, Comparative Biochemistry, 100(4), 827–832
DOI: 10.1016/0305-0491(91)90298-r