Differentiation of the two forms of GPIb functioning as receptors for α-thrombin and vonWillebrand factor: Ca2+ responses of protease-treated human platelets activated with α-thrombin and the tethered ligand peptide - Greco, NJ; Jones, GD; Tandon, NN; Kornhauser, R; Jackson, B; Jamieson, GA (Biochemistry, 1996)