. "UK" . "Nucleic Acids Res." . "NARHAD" . "0389" . "0305-1048" . "28" . "4514" . "4522" . "10.1093/nar/28.22.4514" . . "NMR structure of a DNA duplex containing nucleoside analog 1-(2'-deoxy-beta-D-ribofuranosyl)-3-nitropyrrole and the structure of the unmodified control." . . . . . . .