Tenopir, C.; Neufang, R.: Electronic reference options : how they stack up in research libraries (1992)
0.02
0.015709586 = product of:
0.031419173 = sum of:
0.031419173 = product of:
0.047128756 = sum of:
0.004143596 = weight(_text_:s in 2343) [ClassicSimilarity], result of:
0.004143596 = score(doc=2343,freq=2.0), product of:
0.04927764 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04532371 = queryNorm
0.08408674 = fieldWeight in 2343, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0546875 = fieldNorm(doc=2343)
0.04298516 = weight(_text_:22 in 2343) [ClassicSimilarity], result of:
0.04298516 = score(doc=2343,freq=2.0), product of:
0.15871592 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04532371 = queryNorm
0.2708308 = fieldWeight in 2343, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=2343)
0.6666667 = coord(2/3)
0.5 = coord(1/2)
- Source
- Online. 16(1992) no.2, S.22-28