@article{oai:repository.dl.itc.u-tokyo.ac.jp:00039476,
 author = {Hattori, Akio},
 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 = {},
 note = {application/pdf},
 pages = {741--761},
 title = {Topology of the moduli space of ${\rm SU}(2)$-instantons with instanton number $2 $},
 volume = {34},
 year = {1987}
}