You can find a lot of 'hits' if you search the WEB. You need to use key words like 'newspaper' and 'cellulose' and 'insulation' and so on. You'll get more info than you want!
In the meantime, read this recent post on Newspaper for Insulation. You know, years ago, there was a study done to see how well shredded newspaper insulates as compared to, say, something like goose down. Would you believe they were very close in insulation ability??! The reason goose down is preferred over shredded newspaper in sleeping bags is because of the down's ability to 'spring back' after being matted. Newspaper, on the other hand, won't 'spring back' after it's matted. (And in case you're wondering why goose down sleeping bags are soooo expensive, well, if you were a goose, you wouldn't want to part with your feathers either!) LOL!