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A Relativistic Equation for Bound-State Problems
E. E. Salpeter, Hans A. Bethe · Physical Review · 1951 · 2.6K citations
A unified field theory of mesons and baryons
T. H. R. Skyrme · Nuclear Physics · 1962 · 2.4K citations
Steven Weinberg · Physical Review Letters · 1966 · 1.7K citations