http://hn.vernccvbvyi5qhfzyqengccj7lkove6bjot2xhh5kajhwvidqafczrad.onion/stories/36822880
I think there is / was an official standard or name, I can't remember it though. It never worked with Google really, but it worked on the search engines for our university and other academic sites. skimdesk 2y Another useful Google search trick not mentioned in the article is numeric range queries.