... engines Self archiving Data storage Document storage Free text retrieval Personal Digital Libraries (PDLs) is a broad term that can be conceptually approximated as the ability of today’s software applications to collect (or virtually collect), organise, maintain and provide search capabilities...

... that DRS may be useful, but are not a total replacement for personal contact with human experts. Libraries Information services Free text retrieval Academic libraries Digital libraries Libraries have long been in the business of providing users with reference services...