{"db_type":"WWJDREF","db_name":"国际期刊","reference_articles":[{"patent_date":"1979-07-01","unit":"Journal of the ACM (JACM)","flag":"[J]","issue":"3","year":1979,"author":"Kuo-Chung Tai","index":1,"title":"The Tree-to-Tree Correction Problem"}],"articles_count":1}