“…Classification of citation recommendation approaches based on their set-up. The approaches are classified as follows: A:[104,124,81,82,69,34,56,100,61,20,83,84,28,27,163,37,112,161,29]: B:[19]; C:[167]; D:[137,113,144,159,80,94,96,43,42,168,38,101,95]; E:[68,67,70,127,97,41,146,71,166,44,162,77]; F:…”