TY - JOUR T1 - Conformationally restrained degenerate base analogues JO - Collection of Czechoslovak Chemical Communications PY - 1993/01/01 AU - Williams DM AU - Brown DM ED - DO - DOI: 10.1135/cccc1993s041 PB - Institute of Organic Chemistry & Biochemistry VL - 58 IS - s1 SP - 41 EP - 43 Y2 - 2025/04/08 ER -