@article{Kato:2005jl, author = "Kato, Seikou and Kondo, Kei-Ichi", title = "{Understanding the U(1) problem through dyon configuration in the Abelian projection }", doi = "10.22323/1.020.0331", journal = "PoS", year = 2005, volume = "LAT2005", pages = "331" }