Elsevier Acquires Collexis, a Leading Developer of Semantic Technology and Knowledge Discovery Software for Research and Development Institutions

Acquisition Accelerates Elsevier's Ability to Help Researchers and Decision-Makers, Establish, Execute and Evaluate Research Strategies and Deliver Higher ROI

AMSTERDAM, June 10, 2010 - Elsevier (www.elsevier.com), the leading global
publisher of scientific, technical, and medical information products and
services, announced today the acquisition of assets from Collexis Holdings,
Inc. (www.collexis.com), a leading developer of semantic technology
and knowledge discovery software. The combination of Elsevier's content and
Collexis' semantic technology will provide institutions and researchers new
ways to collaborate, showcase accomplishments and improve grant related
workflow efficiencies.

"Elsevier's research performance, planning and funding (PPF)
strategy, delivered through our SciVal (www.scival.com) suite of
research tools and integrated workflow solutions, helps accelerate scientific
discovery and improve the social and economic impact of research while
improving research driven ROI," said Jay Katzen, Managing Director, Elsevier
Science and Technology. "By combining Collexis' solutions that address
several PPF pain points across our customer's collaboration, funding and
strategic planning initiatives and SciVal, we've created a unique set of
solutions that enable Universities and Government agencies to improve
research outcomes."

Collexis technology is considered market leading in the
academic segment; well architected and thoughtfully developed over time. Main
products include:

    - Expert Profiler (www.collexis.com/products/expertprofiling.htm):
      helps institutions better expose their research history and
      capabilities by aggregating the "conceptual fingerprints" of existing
      published papers. By using historic publishing and citation data to
      expose unique relationships among people and institutions, Expert
      Profiler provides senior decision makers with transparency while
      researchers can use it to identify others with whom to collaborate.

    - Reviewer Finder (www.collexis.com/products/reviewerfinder.htm):
      helps grant managers identify the best reviewer available by
      automatically identifying the most highly qualified researcher with the
      lowest conflict of interest. This solution can reduce the time grant
      managers spend identifying a reviewer from upwards of a month down to
      one week. Reviewer Finder won the 2010 SIIA CODiE Award
      (www.siia.net/codies/2010/about.asp) for the Best Solution
      Integrating Content into Workflow.

    - Professional Social Networking (
      www.aipuniphy.org/Portal/Portal.aspx): BiomedExperts.com
      (www.biomedexperts.com/) connects biomedical researchers to each
      other through the display and analysis of each scientist's co-author
      network allowing scientists and researchers across organizations to
      collaborate in new and time-saving ways.

    - Knowledge Engine and Knowledge Services: Using the Collexis
      Knowledge Engine, Collexis helps institutions search, index,
      categorize, trend and match information inside their own custom data
      for discovery. They build embedded knowledge solutions in integrated
      workflows for academic, government and corporate clients.

Collexis Holdings, Inc. is headquartered in Columbia, South
Carolina with operations in Cologne, Germany and Valparaiso, Chile. The
acquisition is effective immediately and terms of the agreement are not being
disclosed.

About Elsevier

Elsevier is a world-leading publisher of scientific, technical
and medical information products and services. The company works in
partnership with the global science and health communities to publish more
than 2,000 journals, including The Lancet (www.thelancet.com) and Cell
(www.cell.com), and close to 20,000 book titles, including major
reference works from Mosby and Saunders. Elsevier's online solutions include
ScienceDirect (www.sciencedirect.com), Scopus (www.scopus.com),
Reaxys (www.reaxys.com), MD Consult (www.mdconsult.com) and
Nursing Consult (www.nursingconsult.com), which enhance the
productivity of science and health professionals, and the SciVal suite
(www.scival.com) and MEDai's Pinpoint Review (www.medai.com),
which help research and health care institutions deliver better outcomes more
cost-effectively.

A global business headquartered in Amsterdam, Elsevier
(www.elsevier.com) employs 7,000 people worldwide. The company is part
of Reed Elsevier Group PLC (www.reedelsevier.com), a world-leading
publisher and information provider, which is jointly owned by Reed Elsevier
PLC and Reed Elsevier NV. The ticker symbols are REN (Euronext Amsterdam),
REL (London Stock Exchange), RUK and ENL (New York Stock Exchange).

    Tom Reller,
    Vice President,
    Global Corporate Relations
    T.Reller@elsevier.com
    +1-215-239-3508

Tom Reller, Vice President, Global Corporate Relations, T.Reller at elsevier.com, +1-215-239-3508