I'm currently looking at different problems - and look for papers. I'm curious: Did you research the initial papers by feeding google with potential keywords fo

I'm currently looking at different problems - and look for papers. I'm curious: Did you research the initial papers by feeding google with potential keywords for freely accessible files or did you buy a subscription/access to these things instead? I just recently found a paper on ieee.org that seems to be 4 pages, costs > 30 Dollar to access. Is that something you did in your research?