This researcher should learn to talk to his local librarians. Many universities have a bibliography management system e.g. Refworks, that would be a lightweight solution. And many of the articles he has in print are quite likely now already properly digitized and available by PDF through his university library.
If he's a proper researcher, he should care about more than what he has in his binder. There are likely more recent articles that reference those articles, building on that knowledge. Which he's missing.
He can chat with a librarian online, or try the 20th century version of communication and make an appointment to talk in person.
Slashdot Mirror
This researcher should learn to talk to his local librarians. Many universities have a bibliography management system e.g. Refworks, that would be a lightweight solution. And many of the articles he has in print are quite likely now already properly digitized and available by PDF through his university library. If he's a proper researcher, he should care about more than what he has in his binder. There are likely more recent articles that reference those articles, building on that knowledge. Which he's missing. He can chat with a librarian online, or try the 20th century version of communication and make an appointment to talk in person.