Comparison of the in vivo anticoagulant properties of standard properties of standard heparin and the highly selective factor Xa inhibitors antistasin and tick anticoagulant peptide in a rabbit model of venous thrombosis - Vlasuk, G P; Ramjit, D; Fijita, T; Dunwiddie, C T; Nutt, E M; Smith, D E; Shebusky, R J (Thromb Haemostas, 1991)