Bushallow-Wilbur, L.; DeVinney, G; Whitcomb, F.: Electronic mail reference service : a study (1996)
0.02
0.015383741 = product of:
0.030767482 = sum of:
0.030767482 = product of:
0.061534964 = sum of:
0.061534964 = weight(_text_:l in 5090) [ClassicSimilarity], result of:
0.061534964 = score(doc=5090,freq=2.0), product of:
0.20017955 = queryWeight, product of:
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.050364036 = queryNorm
0.30739886 = fieldWeight in 5090, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.9746525 = idf(docFreq=2257, maxDocs=44218)
0.0546875 = fieldNorm(doc=5090)
0.5 = coord(1/2)
0.5 = coord(1/2)