@article{oai:tsukuba.repo.nii.ac.jp:00040366,
 author = {Chiba, Tomoaki and Hino, Hideitsu and 日野, 英逸 and Akaho, Shotaro and Murata, Noboru},
 issue = {1},
 journal = {PLOS ONE},
 month = {Jan},
 title = {Time-Varying Transition Probability Matrix Estimation and Its Application to Brand Share Analysis},
 volume = {12},
 year = {2017}
}