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Marius Tscherning (1854–1939): his life and work in optical physiology - Norn - 2004 - Acta Ophthalmologica Scandinavica - Wiley Online Library
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Marius Tscherning (1854–1939): his life and work in optical physiology - Norn - 2004 - Acta Ophthalmologica Scandinavica - Wiley Online Library