How to give editors access to specific pages only

Hi,
I am working on a site where more than 10 editors will insert contents in different pages. Now what I need is the ability to restrict editors to change the contents of the pages only which are created by them. For example Editor A has created a Page with Title A, then he should not be able to modify the contents of other pages. He should have access to Page A only. And same thing for other editors. Please help me in this regard.
Thanks in Advance.