of small account困难

This is the famed citation index, that is to say the number of times a paper has been quoted elsewhere in the scientific literature, the assumption being that an important paper will be cited more often than one of small account.

这就是著名的引用指数，即一篇论文在其他科学文献中被引用的次数，其假设是重要论文被引用的次数会多于无足轻重的论文。