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The AEA maintains EconLit, a searchable data base of citations for articles, books, reviews, dissertations, and working papers classified by JEL codes for the years from 1969. A recent addition to EconLit is indexing of economics journal articles from 1886 to 1968 [ 1 ] parallel to the print series Index of Economic Articles .
Modern-day referral marketing now heavily relies on social media and the internet, allowing the scope of referrals to increase dramatically by reaching a far broader audience. [2] Most recently, referral marketing has allowed companies such as PayPal, Dropbox and Airbnb to grow exponentially with their personalized referral programs [3] [4].
The RIS file format—two letters, two spaces and a hyphen—is a tagged format for expressing bibliographic citations.According to the specifications, [3] [4] [5] the lines must end with the ASCII carriage return and line feed characters.
ResearchGate was founded in 2008 [11] by virologist Ijad Madisch, who remains the company's CEO, [4] [3] with physician Sören Hofmayer, and computer scientist Horst Fickenscher. [13]
The Vancouver system, also known as Vancouver reference style or the author–number system, is a citation style that uses numbers within the text that refer to numbered entries in the reference list.
In 2012, a survey carried out by GFKNOP found that 87% of consultants believed that patients would receive worse treatment as a result of Open Referral. [8] A survey carried out by the Office of Fair Trading found that 7% of GPs saw their role as "making a definite recommendation for a particular choice of facility and/or consultant".
Since it was first developed at a time when computing power was low, and space precious, MARC uses a simple three-digit numeric code (from 001-999) to identify each field in the record. MARC defines field 100 as the primary author of a work, field 245 as the title and field 260 as the publisher, for example.