Fresco, J R THE ACCOMMODATION OF NONCOMPLEMENTARY BASES IN HELICAL POLYRIBONUCLEOTIDES AND DEOXYRIBONUCLEIC ACIDS. [electronic resource] - Proceedings of the National Academy of Sciences of the United States of America Mar 1960 - 311-21 p. digital Publication Type: Journal Article ISSN: 0027-8424 Standard No.: 10.1073/pnas.46.3.311 doi