@phdthesis{oai:tsukuba.repo.nii.ac.jp:00008229,
 author = {Asai, Manabu and 浅井, 学},
 month = {},
 note = {The main purposes of this dissertation are; (1) to carry out empirical investigations of nonstationary financial time series based on available econometric techniques, and then ..., 1998},
 school = {筑波大学, University of Tsukuba},
 title = {Essays in nonstationary financial time series},
 year = {1998}
}