There are more scientists at work than ever before in history, and of course they are not meant to reinvent the wheel over and over again. That is why they closely monitor what is published in their field and refer to it in their own studies. There is special reference software for searching and annotating documents. Mendeley Desktop (free for non-commercial use) is one such program, and it can also be used for other purposes, such as when you want to file a legal case in which you are involved.
Mendeley Desktop you can here to download.
Click the link above to download for free
Mendeley Desktop – Reference system for (scientific) documents
