I am communicating with other researchers in neuroscience. Sometime they dont have access to a paper we may be discussing. For example the university access i have (Athens) has limits with each major publisher having some journals subscribed to Athens and some not. I wanted to know what other academics do in these situations. Well two things i guess. I am asking about this. 1. What are the rules about this. Is it ok to attach a copy of paper ? 2. What actually happens in real life if its not ok. Are these rules broken so that communication and progress can happen in spite of these barriers.