?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Does+it+Matter+Which+Citation+Tool+is+Used+to+Compare+the+h-index+of+a+Group+of+Highly+Cited+Researchers%3F&rft.creator=Farhadi%2C+Hadi&rft.creator=Salehi%2C+Hadi&rft.creator=Yunus%2C+Melor+Md&rft.creator=Aghaei+Chadegani%2C+Arezoo&rft.creator=Farhadi%2C+Maryam&rft.creator=Fooladi%2C+Masood&rft.creator=Ale+Ebrahim%2C+Nader&rft.subject=Archives&rft.subject=Statistical+Models&rft.subject=Economics&rft.subject=Peer+Review&rft.description=h-index+retrieved+by+citation+indexes+(Scopus%2C+Google+scholar%2C+and+Web+of+Science)+is+used+to+measure+the+scientific+performance+and+the+research+impact+studies+based+on+the+number+of+publications+and+citations+of+a+scientist.+It+also+is+easily+available+and+may+be+used+for+performance+measures+of+scientists%2C+and+for+recruitment+decisions.+The+aim+of+this+study+is+to+investigate+the+difference+between+the+outputs+and+results+from+these+three+citation+databases+namely+Scopus%2C+Google+Scholar%2C+and+Web+of+Science+based+upon+the+h-index+of+a+group+of+highly+cited+researchers+(Nobel+Prize+winner+scientist).+The+purposive+sampling+method+was+adopted+to+collect+the+required+data.+The+results+showed+that+there+is+a+significant+difference+in+the+h-index+between+three+citation+indexes+of+Scopus%2C+Google+scholar%2C+and+Web+of+Science%3B+the+Google+scholar+h-index+was+more+than+the+h-index+in+two+other+databases.+It+was+also+concluded+that+there+is+a+significant+positive+relationship+between+h-indices+based+on+Google+scholar+and+Scopus.+The+citation+indexes+of+Scopus%2C+Google+scholar%2C+and+Web+of+Science+may+be+useful+for+evaluating+h-index+of+scientists+but+they+have+some+limitations+as+well.&rft.publisher=AENSI+Publications&rft.date=2013-03-27&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F9033%2F1%2F198-202.pdf&rft.identifier=++Farhadi%2C+Hadi+and+Salehi%2C+Hadi+and+Yunus%2C+Melor+Md+and+Aghaei+Chadegani%2C+Arezoo+and+Farhadi%2C+Maryam+and+Fooladi%2C+Masood+and+Ale+Ebrahim%2C+Nader++(2013)+Does+it+Matter+Which+Citation+Tool+is+Used+to+Compare+the+h-index+of+a+Group+of+Highly+Cited+Researchers%3F++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F9033%2F