DROVANTI, A. Therapeutic Activity of Oral Glucosamine Sulfate in Osteoarthrosis : A Placebo-controlled Double-Blind Investigation. Clinical Therapeutics. 1980, 3, 260-272
TAPADINHAS, M. J. Oral Glucosamine Sulphate in the Management of Arthrosis : Report on a Multi-Centre Open Investigation in Portugal. Pharmatherapeutica. 1982, 3, 157-168
VAZ, L. A. Double-blind clinical evaluation of the relative efficacy of ibuprofen and glucosamine sulphate in the management of osteoarthritis of the knee in out-patients. Current Medical Research and Opinion. 1982, 8, 145-149