is.sagepub.com/cgi/content/abstract/34/1/93 The online version of this article can be found at: Published by: http://www.sagepublications.com On behalf of: Chartered Institute of Library and Information Professionals can be found at:Journal of Information ScienceAdditional services and information for http://jis.sagepub.com/cgi/alertsEmail Alerts: http://jis.sagepub.com/subscriptionsSubscriptions: http://www.sagepub.com/journalsReprints.navReprints: http://www.sagepub.co.uk/journalsPermissions.navPermissions: http://jis.sagepub.com/cgi/content/refs/34/1/93Citations by Roberto Hernandez Sampieri on October 22, 2008http://jis.sagepub.comDownloaded from