I'm writing a document and I want to split my bibliography into 3 or more sections, where the first sections single out specific entries in some specific order, and the last section shows all other entries which were cited in my paper and do not appear already in the previous sections. How can I do this with
As a mockup, what I want to produce is something that looks like the following:
Very important papers
 Some person, and some one else. The most important paper which should appear at the beginning of the list.
 Someone else. Another important paper which should appear second.
Some other papers
 Yet another person. A paper which is not so important, but also deserves a special section.
 The same person maybe. Another paper which I want as second in this section.
All other papers
 Person A. Other cited papers go here.
 Person B. Perhaps sorted by author name.
 Person C. And these papers do not appear in the previous lists.