Accumulated Citation Count as Fertileness of Scientific Article

The literature survey by scientific bibliographic data base is indispensable in the research activities. We can find related articles with appropriate keywords. However, the threads of related research are not easy to grasp from the search result. It is necessary to repeat a search, judge a citation relation and figure out the thread. The present paper proposes the index "accumulated citation count" of a scientific article to measure the thread of citations that starts from the article.