Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Thoralf Hanisch and Burkhard Kleine and Afra Ritzl and Erwin Müller‐Hartmann,"Ferromagnetism in the Hubbard model: instability of the Nagaoka state on the triangular, honeycomb and kagome lattices",Annalen der Physik,0003-3804,Wiley,1995-01,507,4,303-328,https://cir.nii.ac.jp/crid/1360298763912350080,https://doi.org/10.1002/andp.19955070405