ALLEN EH, GLASSMAN E, SCHWEET RS (1960). "Incorporation of amino acids into ribonucleic acid. I. The role of activating enzymes". J. Biol. Chem. 235: 1061–7. PMID13792726.
Berg P, Bergmann FH, Ofengand EJ, Dieckmann M (1961). "The enzymic synthesis of amino acyl derivatives of ribonucleic acid I. The mechanism of leucyl-, valyl-, isoleucyl- and methionyl ribonucleic acid formation". J. Biol. Chem. 236: 1726–1734.
Bergmann FH, Berg P, Dieckmann M (1961). "The enzymic synthesis of amino acyl derivatives of ribonucleic acid II. The preparation of leucyl-, valyl-, isoleucyl- and methionyl ribonucleic acid synthetases from Escherichia coli". J. Biol. Chem. 236: 1735–1740.