A unifying concept for the amino acid code

The Analysis of Proximities: Multidimensional Scaling with an Unknown Distance Function. I.

Roger N. Shepard · Psychometrika · 1962 · 2.6K citations

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Atlas of Protein Sequence and Structure, 1972.

Walter M. Fitch, M. O. Dayhoff · Systematic Zoology · 1973 · 2.5K citations

Life Sciences, Biochemistry, Biology +7

Amino Acid Difference Formula to Help Explain Protein Evolution

Richard Grantham · Science · 1974 · 2.4K citations

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The origin of the genetic code

Francis Crick · Journal of Molecular Biology · 1968 · 2.3K citations

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The Analysis of Proximities: Multidimensional Scaling with an Unknown Distance Function. II

Roger N. Shepard · Psychometrika · 1962 · 912 citations

Natural Sciences, Mathematics, Optimization +4