464244 Proof-reading of scientific articles

Hi All, I have some scientific articles written in English. The task is quite simple. I swant someone (possibly some native speaker of English, who has good writing skills) to just proof-read the text, correct any grammatical, spelling errors, check and correct the sentence composition etc. Articles are written in Latex. Total pages for all the articles is 80 (with 1.5 line spacing). So, should be an easy task for good writers. I can pay $20 upon completion of the task.