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De Solla Price, The revolution in mapping of science.Proceedings of the American Society for Information Science, 16 (1979) 249\u2013253."},{"key":"BF02457431_CR3","doi-asserted-by":"crossref","first-page":"103","DOI":"10.1007\/BF02017235","volume":"9","author":"L. Leydesdorff","year":"1986","unstructured":"See,inter alia,L. Leydesdorff, The development of frames of reference.Scientometrics, 9 (1986) 103\u2013125.","journal-title":"Scientometrics"},{"key":"BF02457431_CR4","doi-asserted-by":"crossref","first-page":"290","DOI":"10.1002\/(SICI)1097-4571(199105)42:4<290::AID-ASI5>3.0.CO;2-9","volume":"42","author":"K. W. McCain","year":"1991","unstructured":"For example,K. W. McCain, Mapping economics through the journal literature: an experiment in journal cocitation analysis.Journal of the American Society for Information Science, 42 (1991) 290\u2013296.","journal-title":"Journal of the American Society for Information Science"},{"key":"BF02457431_CR5","doi-asserted-by":"crossref","first-page":"265","DOI":"10.1002\/asi.4630240406","volume":"24","author":"H. G. Small","year":"1973","unstructured":"Document co-citation was co-discovered independently by:H. G. Small, Co-citation in the scientific literature: a new measure of the relationship between publications,Journal of the American Society for Information Science, 24 (1973) 265\u2013269, andI. V. Marshakova, A system of document links 49\u201357.","journal-title":"Journal of the American Society for Information Science"},{"key":"BF02457431_CR6","doi-asserted-by":"crossref","first-page":"163","DOI":"10.1002\/asi.4630320302","volume":"32","author":"H. D. White","year":"1981","unstructured":"Author co-citation analysis was introduced byH. D. White, B. C. Griffith, Author co-citation: a literature measure of intellectual structure.Journal of the American Society for Information Science, 32 (1981) 163\u2013172. See alsoK. W. McCain, Mapping authors in intellectual space: a technical overview.Journal of the American Society for Information Science, 41 (1990) 433\u2013443.","journal-title":"Journal of the American Society for Information Science"},{"key":"BF02457431_CR7","doi-asserted-by":"crossref","DOI":"10.1007\/978-1-349-07408-2","volume-title":"Mapping the Dynamics of Science and Technology","author":"M. Callon","year":"1986","unstructured":"SeeM. Callon, J. Law, A. Rip,Mapping the Dynamics of Science and Technology. London: Macmillan, 1986, for a book-length treatment of co-word analysis in the context of, and as analytic tool for, actor-network theory."},{"key":"BF02457431_CR8","doi-asserted-by":"crossref","first-page":"233","DOI":"10.1002\/(SICI)1097-4571(199105)42:4<233::AID-ASI1>3.0.CO;2-I","volume":"42","author":"R. R. Braam","year":"1991","unstructured":"For example,R. R. Braam, H. F. Moed, A. F. J. Van Raan, Mapping of science by combining co-citation and word analysis. I. Structural aspects.Journal of the American Science of Information Science, 42 (1991) 233\u2013251, andR. R. Braam, H. F. Moed, A. F. J. Van Raan, Mapping of science by combining co-citation and word analysis. II. Dynamical aspects.Journal of the American Science of Information Science, 42 (1991) 252\u2013266.","journal-title":"Journal of the American Science of Information Science"},{"key":"BF02457431_CR9","doi-asserted-by":"crossref","first-page":"153","DOI":"10.1007\/BF02016892","volume":"32","author":"K. W. McCain","year":"1995","unstructured":"K. W. McCain, The structure of biotechnology research-and-development (R&D).Scientometrics, 32 (1995) 153\u2013175, andK. W. McCain, Biotechnology in context: a database-filtering approach to identifying core and productive non-core journals supporting multidisciplinary R&D.Journal of the American Society for Information Science, 46 (1995) 306\u2013317.","journal-title":"Scientometrics"},{"key":"BF02457431_CR10","first-page":"263","volume-title":"Science and Technology Indicators","author":"R. Todorov","year":"1989","unstructured":"R. Todorov, Co-classification analysis for science mapping: an example from superconductivity, in:A. F. J. Van Raan, A. J. Nederhof, H. F. Moed, (Eds),Science and Technology Indicators, Leiden: DSWO Pr., University of Leiden, 1989, p. 263\u2013270."},{"key":"BF02457431_CR11","doi-asserted-by":"crossref","first-page":"473","DOI":"10.1177\/030631289019003004","volume":"19","author":"J. Whittaker","year":"1989","unstructured":"J. Whittaker, Creativity and conformity in science: titles, keywords, and co-word analysis,Social Studies of Science, 19 (1989) 473\u2013496.","journal-title":"Social Studies of Science"},{"key":"BF02457431_CR12","first-page":"35","volume-title":"Cartography of Science: Scientometric Mapping with Multidimensional Scaling Methods","author":"R. J. W. Tijssen","year":"1992","unstructured":"R. J. W. Tijssen, Op. cit., Ref. 1, p. 35."},{"key":"BF02457431_CR13","doi-asserted-by":"crossref","first-page":"593","DOI":"10.1007\/BF02017072","volume":"15","author":"R. Todorov","year":"1989","unstructured":"R. Todorov, Representing a scientific field: a bibliometric approach,Scientometrics, 15 (1989) 593\u2013605.","journal-title":"Scientometrics"},{"key":"BF02457431_CR14","first-page":"44","volume-title":"Cartography of Science: Scientometric Mapping with Multidimensional Scaling Methods","author":"R. J. W. Tijssen","year":"1992","unstructured":"R. J. W. Tijssen, Op. cit., Ref. 1, p. 44."},{"key":"BF02457431_CR15","doi-asserted-by":"crossref","first-page":"17","DOI":"10.1016\/B978-0-12-714250-0.50006-1","volume-title":"Classification and Clustering","author":"J. Kruskal","year":"1977","unstructured":"J. Kruskal, The relationship between multidimensional scaling and clustering, in:Classification and Clustering,J. Van Ryzin, (Ed.), New York: Academic Pr., 1977, p. 17\u201344."},{"key":"BF02457431_CR16","volume-title":"Introduction to Multidimensional Scaling: Theory, Methods, and Applications","author":"S. S. Schiffman","year":"1981","unstructured":"S. S. Schiffman, M. L. Reynolds, F. W. Young,Introduction to Multidimensional Scaling: Theory, Methods, and Applications, New York: Academic Pr., 1981."},{"key":"BF02457431_CR17","doi-asserted-by":"crossref","DOI":"10.4135\/9781412983648","volume-title":"Cluster Analysis","author":"M. S. Aldenderfer","year":"1984","unstructured":"M. S. Aldenderfer, R. K. 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Tousignaut, Searching \u201cpharmacy\u201d databases: nomenclature problems and inconsistencies.Database, 5 (1982) 23\u201329.","journal-title":"Database"},{"key":"BF02457431_CR27","doi-asserted-by":"crossref","first-page":"335","DOI":"10.1007\/BF01059265","volume":"10","author":"H. Boxenbaum","year":"1982","unstructured":"SeeH. Boxenbaum, Scientific commentary: literature growth in pharmacokinetics.Journal of Pharmacokinetics and Biopharmaceutics, 10 (1982) 335\u2013348.","journal-title":"Journal of Pharmacokinetics and Biopharmaceutics"},{"key":"BF02457431_CR28","first-page":"1215","volume":"36","author":"R. J. Cluxton Jr.","year":"1979","unstructured":"SeeR. J. Cluxton, Jr., R. H. Hunter, R. C. Reed, Comparison of five information services as sources of bioavailability data.American Journal of Hospital Pharmacy, 36 (1979) 1215\u20131218.","journal-title":"American Journal of Hospital Pharmacy"},{"key":"BF02457431_CR29","first-page":"6","volume":"6","author":"B. 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