In comment to Brya, two points:
- I don't think your assumption that most experts have access is right. Many specialist contributors of Wikipedia are retired researchers who have lost access to the literature. Non-retired researchers have little time for Wikipedia.
- As I have written in another thread for this task force, mal-citation is a plague to Wikipedia, especially wp-en. The right measure to stop this would imho be to implement a guideline that one should only use a (primary) scientific source when one understands it (see this summary). One of the problems is that access to online abstracts is free. References are probably often wrongly inserted because only an abstract was read. DGG's idea would limit this problem.