ESP: Science Direct
For those of you who work with ESP (aimed to master's and/or doctor's degree) and need to look for academic papers to elaborate your lessons, a good tool is Science Direct. It's the best website I know with thousands of papers available for reading and printing. You can browse by journal, author, or keywords. Not all of them are free (those that are are marked as "open access" and you can find them using the advanced search), but sometimes all you need is their abstract. ;) You don't need to register to have access to them. If you are member of an institution, it may grant you access to full articles. Visit the website: Science Direct