1. A system, comprising: a citation search engine, which in operation, retrieves a plurality of citations composed by a plurality of subjects citing a plurality of objects that fit searching criteria specified by a user; an influence evaluation engine, which in operation, creates a list of a plurality of subjects from the user's perspective and calculates the influence scores of the subjects on the user; an object/subject selection engine, which in operation, ranks the objects of the plurality of citations from the user's perspective using the list of subjects as a bias filter; selects objects as the search result for the user based on matching of the objects with the searching criteria as well as the influence scores of the subjects on the user.