Numminen, P.; Vakkari, P.: Question types in public libraries' digital reference service in Finland : comparing 1999 and 2006 (2009)
0.02
0.015816322 = product of:
0.031632643 = sum of:
0.031632643 = product of:
0.06326529 = sum of:
0.06326529 = weight(_text_:p in 2850) [ClassicSimilarity], result of:
0.06326529 = score(doc=2850,freq=4.0), product of:
0.18768665 = queryWeight, product of:
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.052200247 = queryNorm
0.33707932 = fieldWeight in 2850, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5955126 = idf(docFreq=3298, maxDocs=44218)
0.046875 = fieldNorm(doc=2850)
0.5 = coord(1/2)
0.5 = coord(1/2)
