@article{oai:oist.repo.nii.ac.jp:00001246,
 author = {Shimokawa, Tokuro and Kawamura, Hikaru},
 issue = {5},
 journal = {Physical Review Letters},
 month = {Jul},
 title = {Ripple State in the Frustrated Honeycomb-Lattice Antiferromagnet},
 volume = {123},
 year = {2019}
}