TY - JOUR T1 - Sampling Considerations in the Selection of Fragment Screens for Chemical Substructure Search Systems JO - Journal of Chemical Information and Computer Sciences PY - 1979/01/01 AU - Gannon MT AU - Willett P ED - DO - DOI: 10.1021/ci60020a016 VL - 19 IS - 4 SP - 251 EP - 253 Y2 - 2025/08/16 ER -