Comparison of available sorting and data representation functionalities. Comparison of available sorting and data representation functionalities between PubFocus, PubMed, Web of Science® and Google™ Scholar. In comparison with other services PubFocus provides various data sorting modes based on basic bibliometric as well as human factor-based parameters (impact ranking). Likewise, PubFocus contain various data representation modes including both sorted listings and ranking tables. Unlike Web of Science® that provides ranking tables based on basic bibliometric parameters only, PubFocus generates ranking tables that sort publication sources and authors based on their estimated impact (see Implementation).