1. Automated instrumentation and the laboratory diagnosis of bleeding and thrombotic disorders;Walenga,1983
2. Automated prothrombin time test with use of a chromogenic peptide substrate and a centrifugal analyzer;Becker;Clin. Chem.,1984
3. Tentative guidelines for the standardized collection, transport and preparation of blood specimens for coagulation testing;NCCLS;Natl. Comm. Clin. Lab. Stand., Villanova, PA,1981
4. Normenausschuß Medizin im DIN Deutsches Institut for Normung, DIN 58910, 1980, Beuth-Verlag Berlin 30, F.R.G.
5. Eine photometrische Methode zur Bestimmung der Thromboplastinzeit mit einem chromogenen Peptidsubstrat;Becker,1984