1. Collection of tear samples with or without stimulation;Berta;Am J Ophthalmol,1983
2. Berta A Tözsér J 1990 Plasminogen activator and plasminogen activator inhibitor determinations in the tears of patients with keratoconjunctivitis sicca and Sjögren's syndrome
3. Berta A Tözsér J Holly F J 1990 Multilevel inhibition of proteases in tears
4. Eine neue Methode zur semiquantitativen Bestimmung von Alpha-l-Anti-trypsin inhalt der menschlichen Tränenflüssigkeit;Berta;Fortschr Augenheilk,1989