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The difference interferometer: a highly sensitive optical probe for quantification of molecular surface concentration☆

C. Fattinger, Ch. Fattinger, H. Koller, 1993 .

Direct optical immunosensing (sensitivity and selectivity)

W. Lukosz, Walter Huber, Francis Müller, 1992 .

The difference interferometer: application as a direct affinity sensor

Walter Huber, Francis Müller, Daniel Schlatter, 1993 .