Article Writers Required

We are looking for a professional writer with excellent English who has experience of writing articles. The articles must be original and authentic - copying other writers work- rewriting other people articles- using the same paragraphs in multiple articles - using the same facts in multiple articles, will NOT be accepted. Copyscape and other tools will be used to check. These articles need to include references to important sites/sources on the web. Looking for high quality, content rich articles 450 words and 750 words Please provide quotes on per article/word basis, topics will be given and the author will need to carry out research.