@article{oai:repository.dl.itc.u-tokyo.ac.jp:00039562,
 author = {Fujita, Takao},
 issue = {3},
 journal = {Journal of the Faculty of Science, the University of Tokyo. Sect. 1 A, Mathematics = 東京大学理学部紀要. 第1類A, 数学},
 month = {Feb},
 note = {application/pdf},
 pages = {685--696},
 title = {Fractionally logarithmic canonical rings of algebraic surfaces},
 volume = {30},
 year = {1984}
}