@article{027467424, title = "Studies on glyco proteins of animal origin and on their derivatives part 2 synthesis of the poly sulfuric ester of a natural sialo glyco peptide", author = "Bertellini, G. and Butti, A. and Piantanida, B. and Prino, G. and Riva, A. and Rossi, A. and Rossi, S.", year = "1971", journal = "Arzneimittel-Forschung", volume = "21", number = "2", pages = "247-248", issn = "0004-4172", url = "https://eurekamag.com/research/027/467/027467424.php" }